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Environment and Human Health Essay | Essay on Environment and Human Health

February 12, 2024 by Prasanna

Environment and Human Health Essay: Environment comprises of some major elements and a thousand minuscule elements that contribute to nature in some or other way. Environment goes far beyond the normal perception of nature and there are many facts which are yet unknown about it. We have presented long and short essay samples to provide a proper idea about the environment and how it affects human health in various ways. Along with this, we will also provide ten pointers on the theme that will work as guidance for framing the essay.

You can read more  Essay Writing  about articles, events, people, sports, technology many more.

Long and Short Essays on Environment and Human Health Essay

We are providing a long essay of 400-500 words and a short essay of 100 to 200 words on Environment and human health essay

Long Essay on Environment and Human Health 500 words in English

Environment and Human Health Essay will be helpful for students in classes 7, 8, 9, and 10.

For some people environment generally means nature. The environment is the surroundings in which a living being takes birth and evolves according to changes that happen from time to time. It is said that the environmental challenges, changes, and makes human beings adapt to the state of the environment they live in. Thus, Environment visibly affects the humans living on it in many direct or indirect ways.

The life on earth is interconnected in a way that proves that whatever we give in to the earth never simply disappears. Contaminants reach the humans in the form of the food they eat, the air they inhale, and the water that they drink. In some or the other way, everything is connected. The most vulnerable to the harm of the environment are the children and the old age people as their immunity is in question for many reasons. The Food that we eat is not free of pesticides or chemicals as well.

When the food is produced many chemicals are used for ensuring the proper growth of food and due to this, the modern additions damage the quality of the soil of the farmland. Moreover, they also degrade the quality of pollinators that help the food grow naturally. They can cause many diseases like cancer and antibiotic resistance in the people who eat them.

Maintaining the quality of water is important as well because only 2.5% of the total water on earth is drinkable. No matter how many clean water safety acts we put out, sometimes it will always slip through. Many plants rooted in water safety are under threat. We have made rivers and oceans into our dumping areas which at last dents a hole in our hygiene only.

Air pollution is not any less dangerous to humans. It is already seen that outdoor air pollution is attracted to more than 1 million deaths and countless illnesses each year. The toxins transmitted from motor vehicles and industrial emissions dangerously impact human health as they contain pollutants like mercury and Sulphur dioxide. Illnesses like lung cancer, heart diseases, and asthma are results of unhealthy levels of pollution around the world. Rising global temperatures also play an active part in this.

Indoor air can be dangerous as well as they also have chemicals present due to different reasons. Governments have tried to give solutions in the form of agreements and acts to commence a “greener approach” in industries and businesses. However, governments are unable to maintain biodiversity as the world continues to lose species. Thus, Challenges keep on coming along with new improvements that are decided to give way to a healthier earth.

What we can do to solve this? Each person would have to take individual responsibility in this mission. You can reduce your exposure to toxic environments by taking organic food and getting your water tested for metals or chemicals. The earth can do its part of healing you but the best way to deal with it is to take precautionary measures by avoiding a toxic lifestyle, both mentally and physically.

Short Essay on Environment and Human Health Essay 200 words in English

Environment and Human Health Essay is useful for students in classes 1, 2, 3, 4, 5, and 6.

The Environment consists of many facets, both known and unknown. The same is the case with the humans that reside on it. The environment causes many hazards that are harmful to humans in a long-lasting way. They are all caused in the form of the food they eat, the air they inhale, and the water that they drink. All organisms depend on necessities like food water and air to survive. But when these necessities turn out to be polluted to a dangerous extent, there is a huge problem.

The microscopic pollutants in the air can easily slip through our defenses and cause endangering respiratory diseases. Water pollution is the main problem and our body immediately reacts to it. The diseases caused by water cause deaths of 3,575,000 deaths per year globally! Food pollution is no less dangerous as they can cause hormonal or metabolic problems to us and can trigger many forms of diseases. Thus, Earth does let us live on it, but it is solely our responsibility to keep it and ourselves healthy and in the best condition.

10 Lines on Environment and Human Health Essay in English

• The environment can be simply called the nature that accommodates for us to live in.
• Environment and humans’ lives are interconnected, so nothing goes to waste.
• Whatever is given in to the earth, is returned.
• But various hazards are caused by the pollution of the earth’s basic resources.
• The air is polluted due to the toxins of motor vehicles and industrial emission.
• The food is polluted due to the different chemicals used in its production and it alters its natural healthiness.
• The water which is already in the scarce entity is used in many polluting ways and by dumping our waste in it, we make it undrinkable.
• The Illnesses that arise due to these polluted resources are no one’s fault, but ours.
• The government takes many steps to solve the situations in the form of cleaning the resources or lessening pollution.
• But, If we do not stay alert about the same and do not put effort, there would be no change in these bad times.

FAQ’s on Environment and Human Health Essay

Question 1. Which are the organizations that work for human health at a global level?

Answer: United Nations Environment Programme (UNEP), World Wide Fund for Nature, the Intergovernmental Panel on Climate Change (IPCC), World Meteorological Organization, Greenpeace, Earth Day, and Green Panther are some of the organizations aiding in human health.

Question 2. Which health hazard causes the most deaths globally?

Answer: Air pollution causes the most amount of deaths according to the UN.

Question 3. Which tests are used to understand the water quality?

Answer: Tests like temperature testing, salinity testing, Ph testing, and many more are used to determine water quality.

Question 4. What does environmental health science mean?

Answer: Environmental health science is the study of processes of the environment and how they affect life on earth.

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Human health and the environment

Human health and the environment are inextricably linked at local, national and global scales. Exposure to environmental issues, such as pollution, climate change, extreme heat events and poor water quality, can negatively impact human health and wellbeing. Different populations and groups differ in their vulnerability to environmental degradation, climate change and extreme heat events, often as a result of age demographics and socio-economic inequalities that affect resilience.

In this Collection, we present articles that explore emerging threats to health and wellbeing posed by the environment, health benefits the environment can provide, and policies that can help improve air, water and soil quality, limit pollution and mitigate against extreme events. We welcome submissions of complementary studies and opinion pieces that can help broaden the discussion and further our understanding of the links between human health and the environment.

This Collection supports and amplifies research related to SDG 3 - Good Health and Well-being.

Niheer Dasandi, PhD

University of Birmingham, UK

Kerstin Schepanski, PhD

Freie Universität Berlin, Germany

Fiona Tang, PhD

University of New England, Australia

• Collection content
• Participating journals
• About the Editors
• About this Collection

Reviews & Opinion

Where dirty air is most dangerous

Exposure to poor air quality can damage human health and incur associated costs. The severity of these impacts is not uniform around the globe, but depends on the health and density of the populations.

• Kerstin Schepanski

Climate Change

Population at risk of dengue virus transmission has increased due to coupled climate factors and population growth

Changes in population growth and climatic conditions have increased the risk for dengue transmission, particularly in the Global South, according to a virus transmission index applied to 186 countries from 1979 to 2022.

• Taishi Nakase
• Marta Giovanetti
• José Lourenço

The diurnal variation of wet bulb temperatures and exceedance of physiological thresholds relevant to human health in South Asia

Human physiological thresholds for uncompensable heat stress were exceeded for more than 300 hours in South Asia between 1995 and 2020, including in the evenings, according to an analysis of the diurnal variability of wet and dry bulb temperatures in station data.

• Jenix Justine
• Joy Merwin Monteiro

Spatio-temporal dynamics of three diseases caused by Aedes -borne arboviruses in Mexico

Dong et al. analyse Aedes -borne diseases (ABDs) presence, local climate, and socio-demographic factors of 2,469 municipalities in Mexico, and apply machine learning to predict areas most at risk of ABDs clusters. Dengue was most prevalent, and socio-demographic and climatic factors influenced ABDs occurrence in different regions of Mexico.

• Latifur Khan
• Ubydul Haque

Probabilistic projections of increased heat stress driven by climate change

Exposure to dangerous heat index levels will likely increase by 50-100% in the tropics and by a factor of 3-10 in the mid-latitudes by 2100, even if the Paris Agreement goal of limiting warming to 2°C is met, according to probabilistic projections of global warming.

• Lucas R. Vargas Zeppetello
• Adrian E. Raftery
• David S. Battisti

Malaria elimination on Hainan Island despite climate change

Tian et al. use mathematical modelling to estimate the impact of various interventions on malaria incidence on Hainan Island, also taking into account climate change. They find that although malaria transmission has been exacerbated by climate change, insecticide-treated bed nets and other interventions were effective in controlling the disease.

• Huaiyu Tian
• Christopher Dye

Deforestation and climate change are projected to increase heat stress risk in the Brazilian Amazon

Complete savannization of the Amazon Basin would enhance the effects of climate change on local heat exposure and pose a risk to human health, according to climate model projections.

• Beatriz Fátima Alves de Oliveira
• Marcus J. Bottino
• Carlos A. Nobre

Protecting Brazilian Amazon Indigenous territories reduces atmospheric particulates and avoids associated health impacts and costs

More than 15 million cases of respiratory and cardiovascular infections could be prevented, saving $2 billion USD each year in human health costs by protecting indigenous lands in the Brazilian Amazon, suggest estimates of PM2.5 health impacts between 2010 and 2019.

• Paula R. Prist
• Florencia Sangermano
• Carlos Zambrana-Torrelio

Heavy metal concentrations in rice that meet safety standards can still pose a risk to human health

National safety standard for concentrations of arsenic and cadmium in commercial rice in China are sufficiently high to pose non-negligible health risks especially for chronically exposed children, according to a regionally resolved probability and fuzzy analysis for China.

• Wenfeng Tan

Current wastewater treatment targets are insufficient to protect surface water quality

SDG 6.3 targets to half the proportion of untreated wastewater discharged to the environment by 2030 will substantially improve water quality globally, but a high-resolution surface water quality model suggests key thresholds will still not be met in regions with limited existing wastewater treatment.

• Edward R. Jones
• Marc F. P. Bierkens
• Michelle T. H. van Vliet

Severe atmospheric pollution in the Middle East is attributable to anthropogenic sources

Fine particulate aerosols sampled around the Arabian Peninsula predominantly originate from anthropogenic pollution and constitute one of the leading health risk factors in the region, according to shipborne sampling and numerical atmospheric chemistry modelling.

• Sergey Osipov
• Sourangsu Chowdhury
• Jos Lelieveld

Protecting playgrounds: local-scale reduction of airborne particulate matter concentrations through particulate deposition on roadside ‘tredges’ (green infrastructure)

• Barbara A. Maher
• Tomasz Gonet
• Thomas J. Bannan

Accumulation of trace element content in the lungs of Sao Paulo city residents and its correlation to lifetime exposure to air pollution

• Nathália Villa dos Santos
• Carolina Leticia Zilli Vieira
• Petros Koutrakis

Environmental and health impacts of atmospheric CO 2 removal by enhanced rock weathering depend on nations’ energy mix

Enhanced rock weathering is competitive with other carbon sequestration strategies in terms of land, energy and water use with its overall sustainability dependent on that of the energy system supplying it, according to a process-based life cycle assessment.

• Rafael M. Eufrasio
• Euripides P. Kantzas
• David J. Beerling

Adverse health and environmental outcomes of cycling in heavily polluted urban environments

• Ewa Adamiec
• Elżbieta Jarosz-Krzemińska
• Aleksandra Bilkiewicz-Kubarek

Related reading

Moist heatwaves intensified by entrainment of dry air that limits deep convection

Climate model simulations and reanalysis data suggest that inhibition of atmospheric convection by dry air intensifies moist heatwaves, and this process may further increase moist heatwaves under climate warming.

• Suqin Q. Duan
• J. David Neelin

Nuclear power generation phase-outs redistribute US air quality and climate-related mortality risk

How a nuclear power phase-out may affect air pollution, climate and health in the future is up for debate. Here the authors assess impacts of a nuclear phase-out in the United States on ground-level ozone and fine particulate matter (PM 2.5 ).

• Lyssa M. Freese
• Guillaume P. Chossière
• Noelle E. Selin

U.S. West Coast droughts and heat waves exacerbate pollution inequality and can evade emission control policies

Heat waves and droughts increase air pollution from power plants in California, which disproportionately damages counties with a majority of people of color. Droughts cause chronic increases in pollution damages. Heat waves are responsible for the days with the highest damages.

• Amir Zeighami
• Jordan Kern
• August A. Bruno

Effect of air pollution on the human immune system

Inhaled particulates from environmental pollutants accumulate in macrophages in lung-associated lymph nodes over years, compromising immune surveillance via direct effects on immune cell function and lymphoid architecture. These findings reveal the importance of improved air quality to preserve immune health against current and emerging pathogens.

Socio-demographic factors shaping the future global health burden from air pollution

Millions of premature deaths each year can be attributed to ambient particulate air pollution. While exposure to harmful particulates decreases in future scenarios with reduced fossil fuel combustion, across much of the globe, socio-demographic factors dominate health outcomes related to air pollution.

• Xinyuan Huang

Over half of known human pathogenic diseases can be aggravated by climate change

A systematic review shows that >58% of infectious diseases confronted by humanity, via 1,006 unique pathways, have at some point been affected by climatic hazards sensitive to GHGs. These results highlight the mounting challenge for adaption and the urgent need to reduce GHG emissions.

• Camilo Mora
• Tristan McKenzie
• Erik C. Franklin

Dietary shifts can reduce premature deaths related to particulate matter pollution in China

Population growth and dietary changes affect ammonia emissions from agriculture and the concentration of particulate matter in the atmosphere. This study quantifies the adverse health impacts associated with these processes in China using a mechanistic model of particulate matter formation and transport. It also compares them with direct health impacts of changing diets upon premature death from food-related diseases.

• Xueying Liu
• Amos P. K. Tai
• Hon-Ming Lam

Health co-benefits of climate change mitigation depend on strategic power plant retirements and pollution controls

Climate mitigation policies often provide health co-benefits. Analysis of individual power plants under future climate–energy policy scenarios shows reducing air pollution-related deaths does not automatically align with emission reduction policies and that policy design needs to consider public health.

• Guannan Geng
• Steven J. Davis

The burden of heat-related mortality attributable to recent human-induced climate change

Current and future climate change is expected to impact human health, both indirectly and directly, through increasing temperatures. Climate change has already had an impact and is responsible for 37% of warm-season heat-related deaths between 1991 and 2018, with increases in mortality observed globally.

• A. M. Vicedo-Cabrera
• N. Scovronick
• A. Gasparrini

Anthropogenic emissions and urbanization increase risk of compound hot extremes in cities

Heat extremes threaten the health of urban residents with particularly strong impacts from day–night sustained heat. Observation and simulation data across eastern China show increasing risks of compound events attributed to anthropogenic emissions and urbanization.

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119 Environmental Issues Essay Topic Ideas & Examples

Inside This Article

The environment is facing numerous challenges today, and it is important for us to address these issues in order to create a sustainable future for our planet. In this article, we will explore 119 environmental issues essay topic ideas and provide examples to help you get started on your own essay.

• Climate change: Discuss the causes and effects of climate change and potential solutions to mitigate its impact.

Example: The role of deforestation in contributing to climate change and the importance of reforestation efforts.

• Air pollution: Analyze the sources of air pollution and its effects on human health and the environment.

Example: The impact of vehicle emissions on air quality in urban areas and ways to reduce pollution from transportation.

• Water pollution: Examine the sources of water pollution and the potential consequences for aquatic ecosystems and human health.

Example: The effects of agricultural runoff on water quality and strategies to prevent pollution from entering waterways.

• Deforestation: Discuss the causes and consequences of deforestation and the importance of preserving forests for biodiversity and climate regulation.

Example: The impact of deforestation on indigenous communities and the loss of traditional knowledge and cultural practices.

• Plastic pollution: Explore the sources and effects of plastic pollution in the ocean and ways to reduce plastic waste.

Example: The role of microplastics in marine ecosystems and the need for regulations to prevent further pollution.

• Biodiversity loss: Analyze the factors contributing to the loss of biodiversity and the importance of protecting endangered species.

Example: The impact of habitat destruction on wildlife populations and the need for conservation efforts to preserve biodiversity.

• Overfishing: Discuss the consequences of overfishing on marine ecosystems and sustainable fishing practices.

Example: The decline of fish stocks due to overfishing and the importance of implementing fishing quotas and marine protected areas.

• E-waste: Examine the growing problem of electronic waste and the environmental and health risks associated with improper disposal.

Example: The challenges of recycling electronic devices and the need for better e-waste management practices.

• Urban sprawl: Analyze the impact of urban sprawl on natural habitats and the importance of smart growth and sustainable urban planning.

Example: The loss of green spaces and farmland to urban development and the benefits of compact, walkable communities.

• Renewable energy: Discuss the potential of renewable energy sources to reduce greenhouse gas emissions and dependence on fossil fuels.

Example: The growth of solar and wind power as clean energy alternatives and the challenges of integrating renewables into the grid.

• Ocean acidification: Explore the causes and consequences of ocean acidification on marine ecosystems and the need for carbon emission reductions.

Example: The effects of ocean acidification on coral reefs and shellfish populations and the importance of marine conservation efforts.

• Soil erosion: Analyze the causes of soil erosion and the impact on agricultural productivity and ecosystem health.

Example: The loss of topsoil due to deforestation and unsustainable farming practices and strategies to prevent erosion through soil conservation.

• Wildlife trafficking: Discuss the illegal trade of wildlife and the threats to endangered species and biodiversity.

Example: The demand for exotic pets and animal products driving the illegal wildlife trade and the need for stronger enforcement of wildlife protection laws.

• Pesticide use: Examine the environmental and health risks associated with pesticide use in agriculture and the need for sustainable pest management practices.

Example: The impact of pesticide runoff on water quality and non-target species and the benefits of organic farming methods.

• Food waste: Analyze the causes and consequences of food waste and potential solutions to reduce waste and improve food security.

Example: The environmental footprint of food production and distribution and the benefits of composting and food rescue programs.

• Greenhouse gas emissions: Discuss the sources of greenhouse gas emissions and the need for global action to reduce carbon pollution.

Example: The role of the transportation sector in contributing to greenhouse gas emissions and the potential for electrification and public transit to reduce emissions.

• Climate refugees: Explore the impact of climate change on vulnerable communities and the need for adaptation and resilience measures.

Example: The displacement of communities due to sea-level rise and extreme weather events and the challenges of climate migration.

• Land degradation: Analyze the causes of land degradation and the consequences for food security, water quality, and ecosystem health.

Example: The loss of arable land to desertification and soil erosion and the importance of sustainable land management practices.

• Ocean pollution: Discuss the sources of ocean pollution, including plastic waste, oil spills, and chemical contaminants, and the need for marine conservation.

Example: The impact of oil spills on marine ecosystems and the challenges of cleaning up and restoring affected areas.

• Environmental justice: Explore the intersection of environmental issues with social justice and equity, including the disproportionate impacts on marginalized communities.

Example: The siting of polluting industries in low-income neighborhoods and communities of color and the need for environmental policies that prioritize equity and inclusion.

• Green infrastructure: Discuss

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Essay On Environment and Human Health

This essay examines how the environment affects human health and how humans can take steps to improve their health by protecting their environment. It looks at the importance of clean air, water, and food for human health, and how environmental pollution can have a negative effect on human health. It also explores the potential of natural remedies to improve the health of both humans and the environment.

Environment and human health are closely related. The environment we live in has a huge impact on our health and wellbeing. We depend on a healthy environment to provide us with the food, water and air we need to survive. If our environment is polluted or damaged, it can lead to poor health and illness. We can help protect our environment and our health by taking steps such as reducing our use of chemicals, recycling, and conserving energy. By doing these things, we can help reduce air, water, and soil pollution. We can also protect our environment from further damage by reducing waste and using natural resources responsibly. It is also important to make sure that the food we eat is safe and healthy. Eating foods grown without pesticides or chemicals can help reduce our exposure to chemicals that can harm us. It is also important to support sustainable farming practices to help preserve our environment for future generations. Finally, we can take steps to protect our environment and our health by educating ourselves and others about the importance of protecting our environment. We can also get involved in local initiatives that help to protect our environment and our health. By protecting our environment, we will be protecting our health and the health of generations to come.

FAQs Related to Essay On Environment and Human Health

1. what is the relationship between environment and human health.

The relationship between environment and human health is very close and complex. Our environment can have a significant impact on our physical, mental, and emotional health, both directly and indirectly. For example, air pollution can cause respiratory diseases, including asthma, lung cancer, and chronic bronchitis.

2. What are the environmental factors that can cause disease?

Environmental factors that can cause disease include exposure to toxins such as air pollution, water pollution, and chemicals; ultraviolet radiation; physical agents such as noise, radiation, and extreme temperatures; and biological agents such as bacteria, viruses, fungi, and parasites. Poor nutrition, inadequate housing, and overcrowding can also contribute to the risk of developing certain diseases.

3. What are the most common environmental health hazards?

The most common environmental health hazards are air pollution, water pollution, lead poisoning, exposure to hazardous chemicals, ultraviolet radiation, and indoor air pollution.

4. What are the health effects of air pollution?

Air pollution can cause numerous health effects, including asthma, respiratory irritation, cardiovascular disease, and cancer. Long-term exposure to air pollution can also lead to decreased life expectancy.

5. What are the health effects of water pollution?

Water pollution can cause numerous health effects, including digestive problems, skin irritation, reproductive problems, and neurological problems. It is also linked to cancer and can contaminate drinking water supplies.

6. What is indoor air pollution and what health effects can it cause?

Indoor air pollution is caused by the presence of hazardous particles and gases, such as radon, formaldehyde, and asbestos, in the air. It can cause a range of health effects, including respiratory and cardiovascular problems, as well as cancer.

7. What are the health effects of poor nutrition?

Poor nutrition can lead to a range of health problems, including obesity, diabetes, heart disease, and anemia. It can also lead to weakened immune systems, cognitive impairment, and stunted growth.

8. What are the health effects of exposure to natural disasters?

Exposure to natural disasters can lead to physical and psychological health problems, such as trauma, anxiety, depression, and post-traumatic stress disorder.

9. What are the impacts of environmental pollution on human health?

Environmental pollution can have a variety of negative impacts on human health. These can range from short-term illnesses such as headaches, dizziness, and nausea to more serious long-term conditions such as respiratory diseases, cancer, and heart disease.

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Environmental Pollution and Human Health Essay

• To find inspiration for your paper and overcome writer’s block
• As a source of information (ensure proper referencing)
• As a template for you assignment

Understanding where and how individuals are exposed to environmental toxins is essential. The essay compares and contrasts five different articles that relate to the environment. However, the articles differ because Pohanka et al.’s article focuses on the environmental impacts on health. Some people rely on vehicles, increasing air pollution, while others do not (Pohanka, 2004). In contrast, Segedy’s article emphasizes how car dependency impacts people negatively, mainly how some individuals depend on cars when traveling, which later ruins their health, while others do not depend on cars. Nations should establish various laws and strategies to lessen Sprawl impacts and overdependence on cars to prevent several grave health issues and fatalities.

Urban sprawl has been a major problem impacting various nations. The effects of sprawl on health workers are discussed in the article by Pohanka. The problem of urban sprawl, which affects the entire country, will be around for a while. Sprawl can have various adverse effects on one’s health, ranging from minor to severe (Pohanka, 2004). Frumkin’s article explores the connection between sprawl and health (Frumkin, 2002).

Environmental influences include air contamination, heat, corporeal activity patterns, traffic accidents, fatalities and injuries, water amount and quality, mental well-being, and social investment. People are not equally affected by sprawl, and those most impacted need special consideration (Frumkin, 2002). The development of policies must take health into account. It is similarly essential to take social justice and fairness into account because the effects of sprawl on population health are unevenly distributed. Workers cannot be isolated from the potential consequences of pollutants in their surroundings as they travel to and from work. Therefore, occupational health nurses must address these issues at work and in their communities.

Owen praises the incredible density of urban areas like Manhattan for their “greenness” in the article “Green Manhattan.” According to him, New York is the greenest biosphere’s largest metropolises and the greenest neighborhood in the United States. Due to the city’s densely populated, New Yorkers mostly use public transportation, consume fewer fossil fuels, and rely on skyscrapers, which require less energy to heat and cool each square foot of internal space than houses (Owen, 2004). Owen’s use of the word “density” makes it possible to imagine Seoul as a “green” location. Seoul produces fewer greenhouse gasses, is more energy conserved, and has less garbage per capita than suburban areas, resembling numerous qualities of Manhattan that Owen lists.

The overreliance on automobiles is a topic covered in Segedy’s article, “Baby Boomers Aging in a Car-Dependent World.” Humans started reorienting our towns and communities around the car much earlier than that, even though this shift to an engine society is typically seen as occurring after World War II (Segedy, 2018). There was almost one car for every American home, even in 1930, at the start of the Great Depression. Our surroundings will not be the same again because the genie was released from the bottle.

The goal of Zipper’s article, “The Incredibly Obvious Way to Reduce Road Deaths That Goes Ignored,” is to lessen the number of people who die on the roads due to collisions. For various reasons, taking public transportation is generally safer than operating a vehicle. The exclusive right of way given to trains (and occasionally buses) reduces the likelihood of collisions (Zipper, 2022). In comparison to automobiles, buses and trains are pretty hefty; “you are effectively in a steel suit,” as Savage put it; this provides passengers with more safety (Zipper, 2022). Another problem is the comparatively slow speed of city buses; when horrible things happen, they usually are not all that bad.

In conclusion, several people worldwide die yearly due to living or working conditions, such as environmental conditions that eventually cause death and overdependence on cars, which eventually exposes people to accidents and hence death. Heart disease, lymphoma, and respiratory conditions can all be made worse by environmental contaminants. People with lower incomes are more likely to live in polluted areas and have exposure to polluted water. Additionally, children and pregnant individuals are more in danger of pollution-related medical conditions.

Frumkin, H. (2002). Urban sprawl and public health. Public Health Reports , 117 (3), 201. Web.

Owen, D. (2004). Green Manhattan . New Yorker . Web.

Pohanka, M., & Fitzgerald, S. (2004). Urban sprawl and you: How sprawl adversely affects worker health. AAOHN Journal , 52 (6), 242–246. Web.

Segedy, J. (2018). Baby boomers are aging in a car-dependent world . The American Conservative . Web.

Zipper, D. (2022). The incredibly obvious way to reduce road deaths that goes ignored . Slate. Web.

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IvyPanda. (2023, December 6). Environmental Pollution and Human Health. https://ivypanda.com/essays/environmental-pollution-and-human-health/

"Environmental Pollution and Human Health." IvyPanda , 6 Dec. 2023, ivypanda.com/essays/environmental-pollution-and-human-health/.

IvyPanda . (2023) 'Environmental Pollution and Human Health'. 6 December.

IvyPanda . 2023. "Environmental Pollution and Human Health." December 6, 2023. https://ivypanda.com/essays/environmental-pollution-and-human-health/.

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• Environment Essay

Essay on Understanding and Nurturing Our Environment

The environment is everything that surrounds us – the air we breathe, the water we drink, the soil beneath our feet, and the diverse flora and fauna that inhabit our planet. It's not just a backdrop to our lives; it's the very essence of our existence. In this essay, we'll explore the importance of our environment, the challenges it faces, and what we can do to ensure a sustainable and thriving world for generations to come.

Our environment is a complex and interconnected web of life. Every living organism, from the tiniest microbe to the largest mammal, plays a crucial role in maintaining the balance of ecosystems. This delicate balance ensures the survival of species, including humans. For instance, bees pollinate plants, which produce the oxygen we breathe. Nature is a masterpiece that has evolved over millions of years, and we are just one small part of this intricate tapestry.

Importance of Environment  

The environment is crucial for keeping living things healthy.

It helps balance ecosystems.

The environment provides everything necessary for humans, like food, shelter, and air.

It's also a source of natural beauty that is essential for our physical and mental health.

The Threats to Our Environment:

Unfortunately, our actions have disrupted this delicate balance. The rapid industrialization, deforestation, pollution, and over-exploitation of natural resources have led to severe environmental degradation. Climate change, driven by the increase in greenhouse gas emissions, is altering weather patterns, causing extreme events like floods, droughts, and storms. The loss of biodiversity is another alarming concern – species are disappearing at an unprecedented rate due to habitat destruction and pollution.

Impact of Human Activities on the Environment

Human activities like pollution, deforestation, and waste disposal are causing environmental problems like acid rain, climate change, and global warming. The environment has living (biotic) and non-living (abiotic) components. Biotic components include plants, animals, and microorganisms, while abiotic components include things like temperature, light, and soil.

In the living environment, there are producers (like plants), consumers (like animals), and decomposers (like bacteria). Producers use sunlight to make energy, forming the base of the food web. Consumers get their energy by eating other organisms, creating a chain of energy transfer. Decomposers break down waste and dead organisms, recycling nutrients in the soil.

The non-living environment includes climatic factors (like rain and temperature) and edaphic factors (like soil and minerals). Climatic factors affect the water cycle, while edaphic factors provide nutrients and a place for organisms to grow.

The environment includes everything from the air we breathe to the ecosystems we live in. It's crucial to keep it clean for a healthy life. All components of the environment are affected by its condition, so a clean environment is essential for a healthy ecosystem.

Sustainable Practices:

Adopting sustainable practices is a key step towards mitigating environmental degradation. This includes reducing our carbon footprint by using renewable energy, practicing responsible consumption, and minimizing waste. Conservation of natural resources, such as water and forests, is essential. Supporting local and global initiatives that aim to protect the environment, like reforestation projects and wildlife conservation efforts, can make a significant impact.

Education and Awareness:

Creating a sustainable future requires a collective effort, and education is a powerful tool in this regard. Raising awareness about environmental issues, the consequences of our actions, and the importance of conservation is crucial. Education empowers individuals to make informed choices and encourages sustainable practices at both personal and community levels.

Why is a Clean Environment Necessary?

To have a happy and thriving community and country, we really need a clean and safe environment. It's like the basic necessity for life on Earth. Let me break down why having a clean environment is so crucial.

First off, any living thing—whether it's plants, animals, or people—can't survive in a dirty environment. We all need a good and healthy place to live. When things get polluted, it messes up the balance of nature and can even cause diseases. If we keep using up our natural resources too quickly, life on Earth becomes a real struggle.

So, what's causing all this environmental trouble? Well, one big reason is that there are just so many people around, and we're using up a lot of stuff like land, food, water, air, and even fossil fuels and minerals. Cutting down a bunch of trees (we call it deforestation) is also a big problem because it messes up the whole ecosystem.

Then there's pollution—air, water, and soil pollution. It's like throwing a wrench into the gears of nature, making everything go wonky. And you've probably heard about things like the ozone layer getting thinner, global warming, weird weather, and glaciers melting. These are all signs that our environment is in trouble.

But don't worry, we can do things to make it better:

Plant more trees—they're like nature's superheroes, helping balance everything out.

Follow the 3 R's: Reuse stuff, reduce waste, and recycle. It's like giving our planet a high-five.

Ditch the plastic bags—they're not great for our landscapes.

Think about how many people there are and try to slow down the population growth.

By doing these things, we're basically giving our planet a little TLC (tender loving care), and that's how we can keep our environment clean and healthy for everyone.

Policy and Regulation:

Governments and institutions play a vital role in shaping environmental policies and regulations. Strong and enforceable laws are essential to curb activities that harm the environment. This includes regulations on emissions, waste disposal, and protection of natural habitats. International cooperation is also crucial to address global environmental challenges, as issues like climate change know no borders.

The Role of Technology:

Technology can be a double-edged sword in environmental conservation. While some technological advancements contribute to environmental degradation, others offer solutions. Innovative technologies in renewable energy, waste management, and sustainable agriculture can significantly reduce our impact on the environment. Embracing and investing in eco-friendly technologies is a step towards a greener and more sustainable future.

Conclusion:

Our environment is not just a collection of trees, rivers, and animals; it's the foundation of our existence. Understanding the interconnectedness of all living things and recognizing our responsibility as stewards of the Earth is essential. By adopting sustainable practices, fostering education and awareness, implementing effective policies, and embracing eco-friendly technologies, we can work towards healing our planet. The choices we make today will determine the world we leave for future generations – a world that can either flourish in its natural beauty or struggle under the weight of environmental degradation. It's our collective responsibility to ensure that it's the former.

FAQs on Environment Essay

1. What is the Environment?

The environment constitutes the entire ecosystem that includes plants, animals and microorganisms, sunlight, air, rain, temperature, humidity, and other climatic factors. It is basically the surroundings where we live. The environment regulates the life of all living beings on Earth.

2. What are the Three Kinds of Environments?

Biotic Environment: It includes all biotic factors or living forms like plants, animals, and microorganisms.

Abiotic Environment: It includes non-living factors like temperature, light, rainfall, soil, minerals, etc. It comprises the atmosphere, lithosphere, and hydrosphere.

Built Environment: It includes buildings, streets, houses, industries, etc. 

3. What are the Major Factors that Lead to the Degradation of the Environment?

The factors that lead to the degradation of the environment are:

The rapid increase in the population.

Growth of industrialization and urbanization.

Deforestation is making the soil infertile (soil that provides nutrients and home to millions of organisms).

Over-consumption of natural resources.

Ozone depletion, global warming, and the greenhouse effect.

4. How do we Save Our Environment?

We must save our environment by maintaining a balanced and healthy ecosystem. We should plant more trees. We should reduce our consumption and reuse and recycle stuff. We should check on the increase in population. We should scarcely use our natural and precious resources. Industries and factories should take precautionary measures before dumping their wastes into the water bodies.

5. How can we protect Mother Earth?

Ways to save Mother Earth include planting more and more trees, using renewable sources of energy, reducing the wastage of water, saving electricity, reducing the use of plastic, conservation of non-renewable resources, conserving the different flora and faunas, taking steps to reduce pollution, etc.

6. What are some ways that humans impact their environment?

Humans have influenced the physical environment in many ways like overpopulation, pollution, burning fossil fuels, and deforestation. Changes like these have generated climate change, soil erosion, poor air quality, and undrinkable water. These negative impacts can affect human behavior and can prompt mass migrations or battles over clean water.  

7. Why is the environment of social importance?

Human beings are social animals by nature. They spend a good amount of time in social environments. Their responsibility towards the environment is certainly important because these social environments might support human beings in both personal development goals as well as career development goals.

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The environment in health and well-being.

• George Morris George Morris European Centre for Environment and Human Health, University of Exeter Medical School, Truro, United Kingdom
• , and  Patrick Saunders Patrick Saunders University of Staffordshire, University of Birmingham, and WHO Collaborating Centre
• https://doi.org/10.1093/acrefore/9780199389414.013.101
• Published online: 29 March 2017

Most people today readily accept that their health and disease are products of personal characteristics such as their age, gender, and genetic inheritance; the choices they make; and, of course, a complex array of factors operating at the level of society. Individuals frequently have little or no control over the cultural, economic, and social influences that shape their lives and their health and well-being. The environment that forms the physical context for their lives is one such influence and comprises the places where people live, learn work, play, and socialize, the air they breathe, and the food and water they consume. Interest in the physical environment as a component of human health goes back many thousands of years and when, around two and a half millennia ago, humans started to write down ideas about health, disease, and their determinants, many of these ideas centered on the physical environment.

The modern public health movement came into existence in the 19th century as a response to the dreadful unsanitary conditions endured by the urban poor of the Industrial Revolution. These conditions nurtured disease, dramatically shortening life. Thus, a public health movement that was ultimately to change the health and prosperity of millions of people across the world was launched on an “environmental conceptualization” of health. Yet, although the physical environment, especially in towns and cities, has changed dramatically in the 200 years since the Industrial Revolution, so too has our understanding of the relationship between the environment and human health and the importance we attach to it.

The decades immediately following World War II were distinguished by declining influence for public health as a discipline. Health and disease were increasingly “individualized”—a trend that served to further diminish interest in the environment, which was no longer seen as an important component in the health concerns of the day. Yet, as the 20th century wore on, a range of factors emerged to r-establish a belief in the environment as a key issue in the health of Western society. These included new toxic and infectious threats acting at the population level but also the renaissance of a “socioecological model” of public health that demanded a much richer and often more subtle understanding of how local surroundings might act to both improve and damage human health and well-being.

Yet, just as society has begun to shape a much more sophisticated response to reunite health with place and, with this, shape new policies to address complex contemporary challenges, such as obesity, diminished mental health, and well-being and inequities, a new challenge has emerged. In its simplest terms, human activity now seriously threatens the planetary processes and systems on which humankind depends for health and well-being and, ultimately, survival. Ecological public health—the need to build health and well-being, henceforth on ecological principles—may be seen as the society’s greatest 21st-century imperative. Success will involve nothing less than a fundamental rethink of the interplay between society, the economy, and the environment. Importantly, it will demand an environmental conceptualization of the public health as no less radical than the environmental conceptualization that launched modern public health in the 19th century, only now the challenge presents on a vastly extended temporal and spatial scale.

• environmental and human health
• environment
• environmental epidemiology
• environmental health inequalities
• ecological public health

Introduction

This article traces the development of ideas about the environment in human health and well-being over time. Our primary focus is the period since the early 19th century , sometimes termed the “modern public health era.” This has been not only a time of unprecedented scientific, technological, and societal transition but also a time during which perspectives on the relationship of humans to their environment, and its implications for their health and well-being, have undergone significant change.

Curiosity about the environment as a factor in human health and well-being, and indeed health-motivated interventions to manage the physical context for life, substantially predate the modern public health era. The archaeological record provides evidence of sewer lines, primitive toilets, and water-supply arrangements in settlements in Asia, the Middle East, South America, and Southern Europe, dating back many thousands of years (Rosen, 1993 ). Some religious traditions also imply recognition of the importance of environmental factors in health. For example, restrictions on the consumption of certain foods probably derive from a belief that these foods carried risks to health; a passage in the book of Leviticus conveys the existence of a belief in the relationship between the internal state of a house and the health of its occupants (Leviticus [14:33–45], quoted in Frumkin, 2005 ).

The sixty-two books of the “Hippocratic Corpus” dating from 430–330 bc are the accepted bedrock of Western medicine (Lloyd, 1983 ), not least because they departed from the purely supernatural explanations for health and disease which hitherto held sway. For the first time, ideas about medicine, diseases, and their causes were being written down. Among these were ideas about the environment and its relationship to mental and physical health (Lloyd, 1983 ; Rosen, 1993 ; Kessel, 2006 ). While scarcely a template for how societies would come to think about environment and health in the modern era, one Hippocratic text in particular, On Airs, Waters and Places , introduces several ideas that do retain currency. For example, the simple message that good health is unlikely to be achieved and maintained in poor environmental conditions is enduring. Also, through specific reference to the health relevance of changes in water, soil, vegetation, sunlight, winds, climate, and seasonality, On Airs, Waters and Places conceives an environment made up of distinct compartments and spatial scales from local to global, recognizing that perturbations in these compartments, and on these scales, may result in disease. Such thinking remains conceptually and operationally relevant today. Hazardous agents are still frequently addressed in “environmental compartments” such as water, soil, air, and food or by developing and applying environmental standards for the different categories of place where people work, live, learn, and socialize. In parts, the Hippocratic Corpus also presages the ecological perspectives now coloring 21st-century public health thinking. These include an understanding of the potential for human activity to impact negatively on the natural world and the importance of viewing the body within its environment as a composite whole.

Environment and Health in the Modern Public Health Era

Epidemiology is the basic science of public health and is concerned with the distribution of health and disease in populations across time and spaces, together with the determinants of that distribution. Environmental epidemiology is a subspecialty dealing with the effects of environmental exposures on health and disease, again, in populations. Since the early 19th century , the outputs of epidemiology have been key components of a “mixed economy of evidence” that has shaped and reshaped priorities and informed the decisions society takes to protect and improve population health (Petticrew et al., 2004 ; Baker & Nieuwenhuijsen, 2008 ).

In a classic paper from the 1990s, the respected epidemiologists, Mervyn and Ezra Susser, helpfully described different “epidemiological eras” in modern public health, each driven by a dominant paradigm concerning the causes of disease and supported by a particular analytical approach (Susser & Susser, 1996 ). This differentiation offers a useful framework within which to consider changing perspectives on the role of environment in health since the early 1900s.

The Environment in an “Era of Sanitary Statistics”

The Industrial Revolution came first to 19th-century Britain driven by technological innovation, abundant coal supplies, and supportive political/economic conditions. Also influential was a post-Reformation philosophy that extolled the work ethic and self-sufficiency. The events were to resonate throughout the world, bringing great prosperity to some, but others, especially the urban poor, endured poor housing, severe overcrowding, and an absence of wholesome water or sanitation. The growing industrial cities became crucibles of squalor, disease, and severely reduced life expectancy as their citizens suffered the ravages of typhus, tuberculosis, and successive cholera epidemics. Unhealthy working conditions and grossly polluted air also damaged health and compounded the misery of urban life at this time. Such challenges were common to all locations touched by the Industrial Revolution and became the catalyst for a new public health movement across Europe and North America (Rayner & Lang, 2012 ; Rosen, 1993 ).

Using the new science of medical statistics, investigators quickly established the locations with the poorest living conditions to be also those where disease and early death were most prevalent (Chadwick, 1842 ), fueling an ultimately transformational societal response—a “sanitary revolution” (Rosen, 1993 ). Such was the impact of this mix of slum clearance with the introduction of waterborne sewerage and piped water supplies that readers of the British Medical Journal , voting almost two centuries later, still chose it, from a shortlist of 15, as the most important medical milestone since the Journal was first published in 1840 . The 11,300 readers who voted even placed it above the discovery of antibiotics and the development of anaesthesia (Ferriman, 2007 ).

Despite its impact, the “sanitary revolution” was famously initiated and sustained on a biologically flawed paradigm regarding the mechanistic causes of disease. Yet “miasma” (the transmission of disease through noxious vapors), because it served as a metaphor for squalid insanitary conditions, still drove effective intervention (Morris et al., 2006 ; Nash, 2006 ). During this time, however, the emergence of epidemiology as the primary mode of inquiry of public health was also pivotal to success. Endorsing this view, Susser and Susser labeled the first half of the 19th century an “Era of Sanitary Statistics,” citing the frequent use of district-level data to link disease to, for example: filthy and degraded urban environments; overcrowding and poor housing and working conditions; and social factors like infant care (Susser & Susser, 1996 )).

Thus, recognition that the environment (physical and social) mattered for health and notions of a “permeable” human body in close connection with other organisms and the abiotic environment were embedded at the launch of the 19th-century public health movement. It is notable that the perspective of the reformers was quite properly “proximal,” that is, rooted in an acceptance of the importance of the local environment, physical and social. While the term “ecology” would not be coined until 1866 (Haekel, 1866 ) and “social ecology” much later still (Bookchin, 1990 ), the public health pioneers embraced what, in today’s terms, we would understand as a broadly socioecological perspective and discerned no conflict in this with their efforts to understand the immediate causes of disease and intervene in a focused way to prevent it (Nash, 2006 ).

Especially through the efforts to stop cholera, the sanitarians affirmed the pathogenic potential of unsanitary conditions and pioneered the epidemiological approach, initially as “environmental epidemiology” (Baker & Nieuwenhuijsen, 2008 ). Other legacies of the Era of Sanitary Statistics have been less enduring. Despite recent advocacy of a “precautionary principle” (see, e.g., Martuzzi, 2007 ; European Environment Agency, 2013 ), the willingness to act on the basis of strong suspicion of a societal-level environmental threat to population health has diminished, perhaps an inevitable casualty of increasing sophistication and “evidence-based” approaches in medicine and policy (Kessel, 2006 ; Brownson et al., 2009 ). Many of public health’s greatest triumphs have flowed from interventions that would have struggled to satisfy today’s evidential criteria. Also, despite a recent reconnection with such arguments, the inherent logic of seeing and tackling disease in its social and environmental context, so obvious to the pioneers of public health, has periodically been less visible in the rhetoric and actions of their successors.

It is appropriate at this point to emphasize the international character of the 19th-century public health movement. This movement can all too easily be presented as a British phenomenon, with seminal contributions from John Snow ( 1813–1858 ) on the investigation of cholera (Vinten-Johansen et al., 2003 ); William Farr ( 1807–1883 ), also on cholera but more widely on medical statistics (Susser & Adelstein,, 1975 ); Edward Jenner ( 1749–1823 ) on vaccination (Baxby, 2004 ), and Edwin Chadwick ( 1800–1890 ) on the assembly of data relating disease to the filth and squalor that came with poverty (Chadwick, 1842 ). In reality, public health, then as now, advanced through the contribution of many individuals in many nations. For example, the German pioneer of cellular biology, Rudolf Virchow ( 1821–1902 ), and his fellow countryman, the hygienist Johan Peter Frank ( 1745–1821 ), were hugely important (Rather, 1985 ). In France, Louis-Rene Vilerme ( 1782–1863 ), the doctor and pioneer of social epidemiology, highlighted links between poverty and death rates (Rosen, 1993 ) and, in the United States, the meticulous work of Lemuel Shattuck ( 1793–1859 ) bears direct comparison with that of Chadwick (Rayner & Lang, 2012 ).

It might be supposed that the consolidated outputs of European laboratories, especially in the decades between 1830 and 1870 , would have quickly expunged the miasmic paradigm from 19th-century medicine and public health. Yet, the concept of miasma was so inculcated in Western thought that, for many, it retained significant explanatory power. Thus, for much of the 19th century there was not a single settled view on disease contagion (e.g., see Kokayeff, 2013 ). Indeed, as late as 1869 some distinguished Medical Officers of Health in England still attributed diseases such as typhoid to “the insidious miasma of sewer gases” and dismissed germs as “pure nonsense.”

The Environment in an “Era of Infectious Disease Epidemiology”

Increasingly contested, the miasmic theory of disease was effectively supplanted in the 1880s by broad acceptance of the germ theory, ushering a new “Era of Infectious Disease Epidemiology” (Susser & Susser, 1996 ). In 1882 , Louis Pasteur’s techniques for growing organisms made it possible for Robert Koch ( 1843–1910 ) to demonstrate that a mycobacterium was the cause of tuberculosis and, shortly thereafter, to provide scientific proof that cholera was waterborne (Foster, 1970 ; Collard, 1976 ; Brock, 1999 ). In so doing, Koch established, what had been hypothesized by his teacher, Jacob Henle ( 1809–1885 ), some 40 years earlier that disease was microbial. Henle, Snow, Koch, and the biologist Ferdinand Cohn ( 1828–1898 ) are rightly seen as fathers of the science of medical microbiology that for a time would come to dominate thinking in medicine and public health (Rayner & Lang, 2012 ).

Initially at least, the germ theory did little to diminish interest in the environment as a determinant of health. Indeed, by revealing causal linkages between organisms isolated from their environmental carriers and specific diseases, it conferred scientific coherence on the established sanitary model and vindicated efforts to secure hygienic water, food, and housing. As Lesley Nash has observed, the germ theorists were initially content to meld the insights of bacteriology with longstanding environmental beliefs. Notions of a body in constant interaction with, and closely dependent on, its local social and physical context (in today’s terms a socioecological perspective) did not conflict with the narrower perspectives of laboratory science (Nash, 2006 ).

While relative contributions may be debated, over a short timeframe medical microbiology, isolation, immunization, and improving social/environmental conditions combined to sharply reduce the burden of infectious disease for Western society. Yet, by the early years of the 20th century , the capacity to examine disease at the microscopic level, which was the engine of diagnostics and therapeutics, was beginning to act on the very foundations that support public health. Medical science gradually made its focus the pathogenic agents of disease, moving attention away from the environment and eroding socioecological perspectives. Doctors seemed quite content to express health as an absence of disease, and medical science to project its role as the maintenance and reinforcement of “self-contained” human bodies (Nash, 2006 ). Through a growing tendency to see health, disease, and their determinants as attributes of individuals rather than characteristics of communities, wider society seemed almost complicit in an ‘individualization’ of health status. One implication of this blunting of a social/environmental thrust of public health was to divorce health from place, a development that would have profound implications in the very different epidemiological context that emerged following World War II.

The Environment in an Era of Chronic Disease Epidemiology

The dramatic reduction in infectious disease was certainly one reason why the epidemiological climate in Western society changed substantially in the mid- 20th century . But just as important was the emergence of a quite disparate set of pathologies believed to be of noncommunicable etiology. Coronary heart disease, cancers, and peptic ulcers, which became the targets in a new “Era of Chronic Disease Epidemiology” (Susser & Susser, 1996 ), were thought rather unlikely to have origins in exposure to what was an increasingly regulated and ostensibly improving physical environment. While the outputs of much postwar epidemiology seemed to endorse this view, it is useful, with hindsight, to recognize the influence of what might be seen as “fashions” in epidemiological inquiry. These fashions would influence how medical science and the wider society would come to regard diseases and their causes for a generation.

The response of the public health community to the new and alarming “noncommunicable” threats was, logically, to deploy descriptive epidemiology to reveal those most likely to be affected. Perhaps surprisingly, those who traditionally were most vulnerable to disease (the young, the old, the immunocompromised, etc.) did not appear to be at increased risk. Rather, the new epidemics disproportionately affected men in their middle years (Nabel & Braunwald, 2012 ). Supported by enhanced computing power and methodological advance (Susser & Susser, 1996 ), researchers began to converge on specific risk factors that correlated with diseases of greatest concern. Many, it seemed, were aspects of individual lifestyle and behaviors, ostensibly freely chosen. A particular attraction for the proponents of what was to become known as “risk factor epidemiology” was its capacity to represent, mathematically, the “relative risk” of contracting a disease between people exposed to a putative risk and those who were not. Some have dubbed this epidemiological approach to noncommunicable or chronic disease “black box epidemiology” because it can relate exposure to outcomes “without any necessary obligation to interpolate either intervening factors or even pathogenesis” (Susser & Susser, 1996 ). Another unfortunate characteristic of this approach to epidemiology is that, despite its laudable intent to understand and address disease in populations , its focus is on individuals within those populations. As a result, it fails to elucidate the societal forces whose influence and interplay shape the health and health-relevant choices of those individuals. When viewed through a policy lens, this mitigates in favor of simplistic solutions that target individuals divorced from context and that lack the traction to produce meaningful change.

In summary, the desire to create a mathematical measure of relative risk for a specific factor is understandable. However, risk factor epidemiology uses an approach that is much more flexible than material reality. In the real world, many different factors coexist and interact to create and destroy health. This is not, however, to deny risk factor epidemiology’s capacity, particularly in synergy with laboratory-based research, to break new ground. Notably, these methodologically driven approaches were key to elucidating links between smoking and lung cancer, heart disease and serum cholesterol, and between levels of prenatal folic acid intake and neural tube defects (Susser & Susser, 1996 ; Kessel, 2006 ; Perry, 1997 ).

The same basic criticism is voiced where similar “black box” epidemiological approaches are used to explore the contribution of a specific environmental agent, as in the case of much recent air pollution epidemiology (see below) (Kessel, 2006 ). Any specific pollutant under epidemiological investigation inevitably coexists with other pollutants and in a specific exposure context (e.g., prevailing climatic conditions). These coexisting factors may be critical in determining the health outcomes from exposure to the pollutant under investigation. Because the outputs of black box epidemiology are abstractions, the relative risk calculation represents an abstraction that can be limited in its capacity to inform policy.

The decades following World War II were a time of declining influence for public health and population perspectives, largely for reasons we have outlined. Yet, in its rhetoric and activities, the discipline of public health seemed at times almost complicit. Even its defining science of epidemiology seemed for a time more concerned to reinforce the insights of clinical medicine than to play the exploratory role on which its reputation had been founded (Susser & Susser, 1996 ). On the face of it, academic public health and the wider public health discipline had little to say about environment, no longer presenting it as an active component in the then current health challenges for Western society. As Nash has observed, physical environments were “recast as homogenous spaces which were traversed by pathogenic agents.” Nevertheless, divorced from the prevailing rhetoric, in many locations there was a parallel narrative depicting a workforce that continued to work at a local level, within established legal and administrative frameworks, to protect and maintain health-relevant environmental quality standards. However, the environmental health function was often set in the narrow, hazard-focused, and compartmentalized terms framed for it by laboratory science. The task was largely confined to identifying, monitoring, and controlling a limited set of toxic or infectious threats in their environmental carriers. Only when pathogenic organisms or toxic agents demonstrably escaped their industrial, agricultural, or marine confines to damage health and reinforce the porosity of the human body did environment briefly assume a higher profile.

Against this backdrop, it was not necessarily predictable or inevitable that environment would regain a central place in public health. Yet, by the end of the 20th century , a much richer understanding of the environmental contribution to human health and well-being had indeed emerged. This change cannot be attributed to a single factor in isolation. Some point to the key influence of Rachel Carson’s Silent Spring in 1962 (Carson, 1962 ), which expressed grave concern for the ecosystem effects of DDT, the linkage to potential human health effects, and the implications of a growing disconnect between humankind and nature. We do not deny the status of Carson’s work as a seminal text of a modern “environmentalism” that would rapidly gather pace and influence (Nash, 2006 ). However, we submit that it is only now, in the 21st century , when the reality of unprecedented anthropogenic damage to global processes and systems and its health implications is self-evident, that the health sector has fully made common cause with the environmentalist movement (e.g., see Butler et al., 2005 ; Butler & Harley, 2010 ) (We discuss this development later in this article under Ecological Public Health.

However, for reasons that are distinct from a mounting concern over anthropogenic threats to global environmental systems and processes, we argue that the closing decades of the 20th century and the early years of this century did see a rekindling of public health and societal interest in the local or proximal environment. This interest has continued into the 21st century . Developing interest in well-being as a concept, the belief that it is important and that it might be enhanced through the organized efforts of society, continues to engage the attention of academics and policymakers. Although well-being demonstrably impacts health and vice versa, well-being is about much more than health. Rather, it is a measure of what matters to people in every sphere of their lives. Despite its importance, well-being has proved a challenging target for policy. Some of its components are beyond the reach of policy. However, others, including aspects of the built and natural environment and people’s connection to it, are amenable to manipulation. Accordingly, research has been especially concerned to identify the qualities of their environment that are important for different people’s well-being, quality of life, and health at various life stages (Royal College of Physicians, 2016 ). Also, on a practical level, integrating the various well-being frameworks and indices that continue to emerge is an ongoing challenge. However, it is sufficient at this point simply to recognize that elevated concern for well-being and its connection to environment can only broaden and deepen concern for the environment in public health. It will continue to drive renewed interest in matters such as landscape, natural beauty and scenery; crime free, clean places; green, blue, and natural environments; and so on.

Reconnecting Health with Place

Five issues/developments merit particular mention for their role in reestablishing the local environment as a mainstream consideration in health in the developed world in the late 20th century . While recognizing that there is an interrelationship among some of the factors discussed, for simplicity, we discuss them separately here.

Air Pollution

In citing air pollution as a key factor in a late- 20th-century resurgence of interest in the environment, we recognize its much longer history as a contributor to ill health (Evelyn, 1661 ; Lloyd, 1983 ). We acknowledge, too, that accounts of the modern public health era since its inception have been suffused with references to air pollution events, their health implications, and the political and professional campaigns that have sought to mitigate risk (Kessel, 2006 ). However, despite a compelling case for action, the need for urgent intervention was only fully accepted after a number of high-profile air pollution episodes in the 20th century . In 1930 , a severe smog incident in Belgium’s Meuse Valley resulted in the death of sixty people. Prophetically, investigators were quick to highlight the potential for many more deaths, were such an incident to be repeated in a more highly populated area (Bell & Samet, 2005 ). In 1948 , a further twenty people were to die and many more suffer injury after an industrial pollution incident in Donora, Pennsylvania (Hamil, 2008 ), but the tipping point came four years later, with the London Smog of 1952 .

Between December 5 and December 9, a dense fog descended on London where it mixed with air, polluted by domestic and industrial emissions. The resulting thick smog was familiar to many urban dwellers, but in this case, a combination of cold weather and stagnant atmospheric conditions caused sulfur dioxide and smoke concentrations to reach and maintain extremely high levels for a sustained period. The smog had a paralyzing effect on the city’s transport system, and many other aspects of daily life were severely disrupted. But the most dramatic effects were on health. Death rates were to reach three times the normal level for the time of year, and demand for hospital beds far exceeded supply (Baker & Nieuwenhuijsen, 2008 ). While the smog dissipated after a few days, deaths rates remained high for several months thereafter. Subsequent analysis has revealed that, rather than the 3,000–4,000 deaths linked to the episode in at the time, a figure of 10,000–12,000 deaths is more probable (Bell et al., 2004 ).

The London smog is historically important, obviously because of the distressing toll in morbidity and mortality and because it catalyzed long-overdue legislative intervention in the UK in the form of the Clean Air Act of 1956 and the U.S. Clean Air Act 1963 . Critically, however, it reminded the public and politicians of the reality that, given the right conditions, population-level environmental exposures were still entirely capable of producing significant morbidity and mortality.

In combination with other factors, the clean air legislation that emerged in the wake of the smog reduced domestic and industrial fossil fuel emissions, and helped to secure significant reductions in background concentrations of smoke and sulfur dioxide (Royal College of Physicians, 2016 ). However, by the late 1980s, a new, more insidious, urban air pollution threat had begun to emerge. This pollution had its origins not in fixed-point emissions, but in the rapidly increasing numbers of motor vehicles and other fossil fuel-driven forms of transport in towns and cities. The pollutants of concern here, which lacked the visibility of the earlier sulfurous smogs, were fine particles, oxides of nitrogen, and ozone. So-called time-series analyses, using data on the temporal variation in environmental exposure and in health, aggregated over the same time period, were now applied to explore the issue of urban air pollution and health (e.g., see Pope et al., 1995 ; Dockery & Pope, 1996 ; Kessel, 2006 ). The studies revealed the cardiopulmonary effects of long-term exposure to much lower levels of ambient air pollution and, later, following further investigation, the absence of a threshold level for causing health effects. Recent outputs of ‘life-course’ epidemiology have also shown that air pollution affects health, not only through the exacerbation of symptoms in the elderly, but through various processes that have impacts from the womb, through childhood to adolescence, early adulthood, and on into middle and older age (Royal College of Physicians, 2016 ). Also, appreciation that air pollutants can be resident in the air for days or even weeks makes air pollution not simply a local problem, but one that demands source control at city, regional, and international levels. In the UK, for example, the equivalent of around 40,000 deaths every year can be attributed to fine particulates and NO 2 exposure from outdoor air (Royal College of Physicians, 2016 ).

Air pollution is probably the most thoroughly investigated of all environmental threats to health and well-being. Revelations about the true extent of its impact on health keep the issue in the headlines and emphasize the centrality of the physical environment within the public health project. Despite being a focus for academic interest and research fundings, the problem of urban air pollution is a very long way from resolution and is one factor that demands a fundamental reappraisal of how, as a species, we live, consume, and travel. (We discuss a wider, global dimension of the air pollution challenge later in this article.)

Everything Matters: The Environment as an Ingredient in Social Complexity

Another important and often overlooked reason for the late- 20th-century rekindling of interest in the environment and human health can be traced to developments within the wider discipline of public health. Ironically, the thinking behind what, by the 1990s, was being termed the “new public health” had its origins in much older ideas that gave prominence to the social structures in which health is created and destroyed (Baum, 1998 ; Awefeso, 2004 ). If we accept that health, disease, and social patterning in these matters are products of a complex interaction of influences at the level of society with the characteristics of individuals, then such complexity ought to be reflected in the policies and partnerships formed to address them. A growing number of analyses, beginning in the 1970s, would turn a spotlight on this complexity and fundamentally challenge the dominance of the biomedical/health care model and its capacity to solve the problems that beset public. These problems included the intractable burden of noncommunicable disease; growing levels of obesity; diminished psychological well-being; and, not least, stubborn and widening inequalities in the health and well-being of different social groups. Concern also mounted over containing rising, and potentially bankrupting, health care costs.

“A New Perspective on the Health of Canadians,” more commonly referred to as the Lalonde Report, after Canada’s then health minister Marc Lalonde, was published in 1974 (Lalonde, 1974 ). Despite its national focus, the report assumed wider relevance because of its analysis of one of public health’s greatest generic challenges, that of navigating among the many complex and interacting determinants of health to identify effective policies and actions. Implicitly offering a socioecological perspective, the Lalonde Report spoke of a “Health Field,” which included all matters that affect health and comprised four core elements: human biology, environment, lifestyle, and health care organization. Any issue, it was proposed, could be traced to one, or a combination, of these elements, allowing the creation of a “map of the health territory” for any problem (Lalonde, 1974 ). In this way, the contribution and interaction of the elements could be assessed. The analysis affirmed the health relevance of a complex environment comprising interacting physical and social dimensions in interaction with the human body. Lalonde’s message was logical and important, yet more than just an echo of an earlier, more inclusive, understanding of the determinants of health and disease. It recast these largely abandoned perspectives for a more scientific and sophisticated era. The proposal that thousands of “pieces” relevant to health and its determinants could be organized in “an orderly pattern” was alluring and progressive, as was the notion that the exercise alone would allow all contributors to more fully appreciate their roles and influence (Morris et al., 2006 ). In the ensuing years, Lalonde’s proposals for understanding and addressing complexity in the determinants of health have been refined and given greater policy relevance by others. In part, this has been through the development of conceptual models of the socioecological determinants of health. These models have been promoted as tools for presenting evidence that can make their implications more apparent (Evans & Stoddart, 1990 ; Dahlgren & Whitehead, 1991 ). In most of these representations, the local environment is accepted as a key driver of health and well-being (Morris et al., 2006 ).

Despite its inherent logic, the socioecological perspectives that emerged in the closing decades of the 20th century created scientific and policy challenges for all constituencies concerned with public health. There were obvious generic challenges, for example, around which of the models (each, necessarily, a gross simplification of a complex reality) might point to solutions (Morris et al., 2006 ; Evans & Stoddart, 1990 ; Reis et al., 2015 ); around the nature of evidence and its interpretation (Petticrew et al., 2004 ; Tannahill, 2008 ); and how, in practice, to traverse professional and policy silos to produce the interdisciplinary approaches that are inevitably required. In this connection, the task of motivating, supporting, and delivering effective intersectoral working, an abiding challenge for public health policy and practice, assumed a much higher profile in the late 20th century with the emergence of the socioecological model of health.

We emphasize that the continuing failure to adequately confront this challenge has the gravest implications for global public health. As Prüss-Üstün et al. recently observed, “Tackling environmental risks requires intersectoral collaboration. After nearly 50 years of actively promoting this concept, whether referred to as intersectoral action, breaking down silos or the nexus approach, it remains elusive as ever. The statement ‘intersectoral collaboration: loved by all, funded by no-one’ points to obstacles, mainly vested interests, that have burdened this approach ever since it was included as part of the WHO/UNICEF Alma Ata Declaration on Primary Health Care in 1978 . Environmental health, quintessentially intersectoral, has suffered most from this lack of progress” (Prüss-Üstün et al., 2016a ).

With specific reference to the role of the local environment, the recognition of socioecological complexity as the determinant of health meant that strict adherence to narrow hazard-focused and compartmentalized approaches became intellectually unsustainable. Yet, acceptance of the dynamic interaction of environment with other determinants of health demands a richer understanding of the environmental contribution than can be provided by toxicology or microbiology in isolation.

The Role of the Environment in Health Inequalities

The fact that the poorest, most degraded urban neighborhoods were those most blighted by disease and reduced life expectancy was clear even to the public health pioneers of the 19th century . Indeed, throughout much of the modern public health era, an acceptance of the importance of the environment for health and well-being has been accompanied by a recognition of the interplay between sociodemographic, economic, and physical factors in creating and sustaining health inequalities.

The term “health inequalities” refers to general differences in health, however caused. Where the differences in health are unfair, unjust, and avoidable, as they often are when linked to social variables, they should more properly be termed “health inequities.” However, in the extensive literature on the topic and in common usage, inequities are termed inequalities, and we adopt this convention here. Despite their importance, the emphasis on tackling health inequalities has varied considerably over time and according to place.

In 2008 , the final report of the Commission on the Social Determinants of Health (CSDH, 2008 ) elevated the global profile of health inequalities and emphasized the interplay of many societal-level factors in their creation in the 21st century . The significant achievements in public health across the world over nearly two centuries have not been shared equally between countries or by all social groups within countries. An important component has been the health-relevant differences in the physical context for people’s lives—the quality of the physical environment. Sometimes expressed in terms of environmental justice , or elsewhere as environmental health inequalities, attention to this area is key to tackling health inequalities across the world (CSDH, 2008 ; Morris & Braubach, 2012 ).

Estimates of the impact of environmental quality on health and well-being vary widely, depending on the definition of environment used. However, that impact is undeniable. Over a billion people in developing countries, for example, have inadequate access to water, and 2.6 billion lack basic sanitation . The World Health Organization estimates that environmental factors were responsible for 12.6 million deaths worldwide in 2012 , 23 percent of all deaths, and 22 percent of the total burden of disease. Addressing environmental risks could prevent 26 percent of all deaths of children under the age of 5 (Prüss-Üstün et al., 2016b ).

In addition, there is clear evidence that a “good” environment empowers health through access to environmental assets such as green spaces, access to a healthy diet, and safe environments in which to walk, cycle, play, and socialize. However, as these data suggest, there is also a fundamental equity dimension to the distribution of both the cause and distribution of environmental stressors, the susceptibility to exposure, and the adverse effects of those exposures. Deprived communities almost invariably live in poorer quality environments, with higher levels of indoor and outdoor air pollution, contaminated land, polluting industrial processes, overcrowded and poor quality housing, and lower levels of environmental assets (Prüss-Üstün et al., 2016a ; 2016b ; Royal College of Physicians, 2016 ; The Marmot Review Team, 2010 ). Populations in developed countries, including the former communist states of eastern Europe living in areas of high air pollution, are disproportionately deprived, for example (Kriger et al, 2014 ; Bell & Ebisu, 2012 ; Branis & Linhartova, 2012 ; Goodman et al., 2011 ). Poor indoor air quality is associated with unfit or inadequate housing standards, conditions that overwhelmingly affect the deprived (The Marmot Review Team, 2010 ). There is evidence that deprived communities are not only more exposed to environmental hazards but are also more susceptible to the effects of those exposures (Goodman et al., 2011 ; Carder et al., 2008 ; Richardson et al., 2011 ; 2013 ; Vinikoor-Imler et al., 2012 ). There are also concerns that stress, at both the individual and community level, can weaken the body’s defenses against external insult and influence the internal dose of toxicants (Gee & Payne-Sturges, 2004 ).

This effect is also seen in social and physical environments. An adequate and nutritious diet is essential to a healthy, productive, and fulfilling life, and it is a fundamental right predicated by a range of factors including personal knowledge, choice, convenience, availability, quality, cost, and social norms. The evidence is clear that deprivation compounds all these factors, with poorer people buying more unhealthy foods with fewer healthy components while being exposed to circumstances that make such “choices” inevitable (Rudge et al., 2013 ). The proportion of adults considered overweight or obese in 2008 in the 19 EU member states for which data were available ranged between 37 and 57 percent for women and between 51 and 69 percent for men ( EUROSTAT ). English children from deprived areas are almost twice as likely to be obese than those in affluent areas, and adult obesity is also associated with deprivation, particularly in women (Public Health England, 2016 ; National Obesity Observatory, 2013 ).

The poor in developed countries are adept at sourcing cheap calories and are exposed to a large numbers of local outlets selling cheap, calorie-dense takeaway food (Saunders et al., 2015 ). These meals are often super-sized and contain high levels of fats, sugar, and salt. At the same time, many of these areas provide limited access to healthy food options, creating a highly compromised public health environment (Saunders et al., 2015 ).

In addition, environmental stressors seem to have a cumulative impact, exacerbating this inequality. It is evident that poorer people have multiple health, social, and environmental stressors. It is entirely plausible that these stressors modify the effect of exposure to pollutants, as is reflected in the increased vulnerability of obese people to the effects of exposure to air pollutants, including increased risk of diseases such as cardiovascular events and respiratory symptoms (WHO, 2013 ; Jung et al., 2014 ). Long-term exposure to airborne pollutants has also been reported to increase the risk of obesity, and being overweight or obese is associated with an increased susceptibility to indoor air pollution in urban children with asthma (Lu et al., 2013 ).

The responsibility for, and relative benefits and costs of, environmental contamination are also important components of inequality. Environmental contamination may be tolerated by communities living in the vicinity of dirty industrial processes if they perceive a benefit in terms of local employment, although that trade-off has largely broken down in developed countries as those industries have declined in the 20th and 21st centuries. On a wider scale, the environmental consequences of contemporary affluent nations’ fuel economies are borne by those populations least able to bear them and with little or no responsibility for their causation (Patz et al., 2005 ). UNICEF has projected that 75–250 million Africans will be exposed to increased water stress due to climate change by 2020 (UNICEF, 2008 ), a phenomenon overwhelmingly caused by the First World. This is a gross injustice. These are also the same people with limited powers to prevent the dumping of rich countries’ waste in their communities. One appalling example is that of the “disposal” of 500 tons of toxic waste in and around Abidjan, the capital of Cote D’Ivoire, in 2006 . This poisonous cocktail of waste oil and contaminants was the result of the trading in, and processing of, hydrocarbon fuels by multinational commodity and shipping companies, criminal levels of cost cutting, and local political corruption, which led to 17 deaths and over 30,000 injuries in one of the poorest communities in the world (Bohand et al., 2007 ) There are many other examples, including the export, often illegally, of hundreds of thousands of tons of e-waste from Western countries to Africa, China, and Asia for recycling or disposal—transferring the costs and dangerous consequences of exposure to workers, including children, and local communities in these countries that do not have the technical or regulatory systems to deal safely with these toxic materials (ILO, 2012 ). Inuit mothers in northern Canada have elevated levels of chemicals such as PCBs—generated many hundreds, if not thousands, of miles away—in their breast milk (Johansen, 2002 ).

The redistribution of the environmental injustices historically endured by the poor also perversely appears to be affecting more affluent communities in the West. The huge expansion of “fracking” in North America, for example, may be leading to an export of risks from traditional “national sacrifice zones” to areas with no previous experience of such industry, creating “profound social, cultural, and economic shocks for middle class communities losing control over their environments” (Lave & Lutz, 2014 ). Despite their relative affluence, this would nonetheless be an injustice given the constraints on local democratic input and highly questionable direct economic benefits to those communities (Kinnaman, 2011 ; Lave & Lutz, 2014 ; Sovacool, 2014 ).

During a period when environmental catalysts for distress migrations are becoming more frequent (Thomas-Hope, 2011 ), there is a moral as well as a professional duty for the Environmental Health community to tackle these inequalities, which otherwise are likely to both widen and deepen.

The Health-Promoting Environment: Green, Blue, and Natural Spaces

While human communities have long valued access to natural resources such as green spaces, the industrialization of the 19th and early 20th centuries saw millions of people deprived of this access. This era did witness some far-sighted philanthropic gifting of areas of open recreational space for the working classes driven by a moral rather than evidence-based imperative. Though welcome, the distribution of, and access to, such resources was limited, inconsistent, unplanned, and vulnerable to the insecurities of voluntary funding. Subsequent local municipal development of parks and other open spaces increased access, and a greater understanding of the benefits of such access blossomed during the late 20th century as research demonstrated and quantified the public health dividends. Access to good-quality green spaces not only makes the places in which we live, work, and play more attractive, but also has a demonstrable effect on improving health and well-being. Green space is linked to lower levels of several diseases and conditions, including lower rates of mortality (Villeneuve et al., 2012 ), increased longevity in older people (Faculty of Public Health, 2011 ), improved mental health (Faculty of Public Health, 2011 ), better outcomes in disease treatment, and reduced medication (Faculty of Public Health, 2011 ), and it also helps reduce health inequalities (Mitchell & Popham, 2008 ; CABE, 2010 ). Plausible mechanisms for these benefits include the provision of a venue for physical activity, promotion of social contact, and the direct impacts of green spaces on psychological and physical health. Natural spaces also promote greater community cohesion and reduce social isolation, providing a platform for community activities, social interaction, physical activity, and recreation (Public Health England, 2014 ). Research from the United States has identified powerful associations between green space and major reductions in aggressive behavior, domestic abuse, and other crime in deprived urban areas (Kuo et al., 2001a , 2001b ).

And yet, there remain great inequalities in the distribution, use, and quality of this empowering resource. People living in the most deprived areas are less likely to live in the greenest areas and therefore have less opportunity to gain the health benefits of green space compared with people living in the least deprived areas (Public Health England, 2014 ). Children living in poor areas, for example, are nine times less likely than those living in affluent areas to have access to green space and places to play (National Children’s Bureau, 2013 ). It is entirely plausible that that this contributes to the sobering reality that children from deprived communities are up to three times as likely to be obese than those children growing up in affluent areas (National Children’s Bureau, 2013 ).

Accessibility, however, is not the same as availability or utility, nor is it simply a function of proximity. It is strongly impacted by the cost of access, whether it is actually physically available, opening times, and the ease of being able to get to it, for example, walking and good public transport. Deprived communities in particular appreciate the value of such spaces, but they tend to underuse them due to concerns about the safety and quality of the spaces (CABE, 2010 ). Experience has shown that quality of the green space is just as important, if not more so, than its size. Post-World War II urban developments in many countries have included large grassy areas, and substantially derelict former industrial sites have often been entirely grassed over. The sterility and sheer size of these sites, the cost of maintenance, and the lack of facilities have often led to misuse and subsequent abandonment by both communities and local municipalities.

The provision, maintenance, and promotion of good-quality and safe , publicly available spaces is not a subsidy; it is an investment delivering economic, health, and regeneration benefits . Research on Philadelphia estimated that maintaining city parks could achieve huge annual savings in health care costs, stormwater management, air pollution mitigation, and social cohesion benefits (The Trust for Public Land, 2008 ). The improved social cohesion associated with natural spaces also has economic benefits. A 2009 Scottish study estimated a £7.36 dividend for every £1 invested in conservation volunteering projects (Greenspace Scotland, 2009 ). It is clear from the evidence that increasing the use of good-quality green space for all social groups is likely to improve health outcomes and reduce health inequalities.

The Reemergence of the Infectious Threat

Among the developments that, for Western societies, consigned environment to the periphery of medical and public health interest in the post–World War II era, we highlighted the epidemiological transition in the mid- 20th century . Indeed, for a period in the 1960s and 1970s it seemed that infectious disease in the developed world had effectively been conquered (Fauci, 2001 ). It was even tempting to suggest that the developing world might eventually follow suit. Yet, within a relatively few years, the twin threats of emerging infectious disease and antibiotic resistance would shatter the earlier confidence and reestablish infection as a live threat to individuals, communities, and populations and one that presented, increasingly, on a global scale.

The term “emerging infectious disease” (EID) denotes an infectious disease, newly recognized as occurring in humans; one that has been previously recognized but is appearing for the first time in a new population or a different geographic area; one that now affects many more people; and/or one that is displaying new attributes, for example, in terms of its resistance or virulence ( adapted from The US Government & Global Emerging Infectious Disease Preparedness and Response ). Although the return of infection was not necessarily anticipated by a confident global community, many predisposing factors were clearly present. Changes in land use, growth and movement of populations, contacts between people and animals, international trade and travel, and, often, an absence of a public health infrastructure all played a part. Where such influences coincided, as in sub-Saharan Africa or parts of Asia, hotspots were created that were conducive to the emergence of infectious disease. Several hundred new infectious diseases appeared across the globe in the period between 1940 and 2004 , with the greatest number emerging in the 1980s (Jones et al., 2008 ). The 1980s was also the decade that notoriously witnessed the late 20th century ’s most sentinel infection event, the first reported cases of Human Immunodeficiency Virus/Acquired Immune Deficiency Syndrome (HIV/AIDS). By 2014 , AIDS alone would result in approximately 78 million cases worldwide . Although HIV/AIDS engendered particular alarm, the list of late- 20th-century EIDs of medical and public health significance is extensive. Variant Creutzfeldt-Jacob disease (vCJD), H5N1 Influenza and Ebola Virus Disease, the Northern Hemisphere debut of the mosquito-borne zoonotic viral disease, and West Nile Fever in New York City in 1999 were all public health and media events. The process continues unabated in the 21st century with the arrival of Severe Acute Respiratory Syndrome (SARS), H1N1 Influenza (“swine flu”), H7N9 Influenza (“bird flu”), and, despite having surfaced some 40 years earlier, Ebola revealed its potential as a global threat with the West African Outbreak of 2014–2015 . More recently still, the distressing incidence of microcephaly in South America putatively linked to the Zika virus simply emphasizes the abiding challenge posed by infection for public health and global economics (European Centre for Disease Control, 2016 ).

Antibiotic resistance has been a developing public health horror story over, perhaps, 50 years. The therapeutic use of antimicrobials and especially antibiotics was a key factor in slashing the burden of illness from infection in Western countries in the latter half of the 20th century . Yet all classes of organisms—fungi, protozoa, viruses, and bacteria—can develop antimicrobial resistance. Through their genetic processes, bacteria have derived multiple resistance mechanisms to antibiotics used in medicine and agriculture. The threat renders humankind vulnerable to a host of infections, notably in hospital settings where treatment options for many infections are now severely limited. As a consequence, even at the dawn of the 21st century , drug resistance was already being perceived as an increasing threat to global public health, involving all major microbial pathogens and antimicrobial drugs (Levy & Marshall, 2004 )

The challenges of EIDs and antimicrobial resistance are, unquestionably, game changers for medicine and public health in the 21st century . Importantly, they are among the factors that have revealed the true limitations of the biomedical model of health and disease in the 20th century and rekindled interest in the socioeconomic and environmental determinants of disease. HIV/AIDS merits special mention in this regard. Although it is believed to have origins in nonhuman primates in West Africa, it is not an environmental disease in the sense that there is a specific environmental reservoir. Medical sciences and epidemiology have shown transmission of the virus via unprotected sex, contaminated blood transfusions, hypodermic needles, and mother to child transmission during pregnancy, delivery, and breastfeeding. HIV (the infection) and AIDS (the disease) have shown the capacity to extend beyond the initially identified high-risk groups, potentially placing whole populations at risk. In some areas of sub-Saharan Africa where the infection is widespread, it impacts negatively on almost every aspect of society and the economy.

Over 30 years after it first emerged and despite concerted efforts, there is still no cure. In addition to banishing complacency, the infection and the disease call for a much wider perspective than that which took root in the postwar era of scientific positivism and medical paternalism. The failure to manage the threat stems in part from an incapacity to understand where to intervene to change behaviors and to see the disease in its social and environmental context.

Ecological Public Health

Earlier in this article, we identified five issues that helped reestablish awareness of the environment as a key component in the production of human health and well-being in the late 20th century . These issues, and our understanding of them, continue to evolve to challenge the public health community and wider society in the 21st century . In the most general terms, progress seems most likely where issues and challenges are framed with reference to a much wider range of pertinent factors by developing new approaches to evidence and its synthesis; by aligning institutional, physical, and educational infrastructures to the task; and by building governance structures in which all players are accountable and yet are encouraged to unite in common cause.

However, society must now embrace an additional and potentially more devastating threat to health and well-being. Human activity, including economic activity, is now directly and indirectly driving changes to the ecosystems and planetary processes on which we rely for health, well-being, and existence. For too long, human beings have lived, moved, consumed, and pursued health and well-being as if humankind is distinct and separate from nature rather than integral to it. The consequences of this disconnect for the natural world were graphically expressed by Rachel Carson in the 1960s and many others in the ensuing years (e.g., see Rockström et al., 2009 ; Steffen et al., 2015 ). However, developments in science and technology now reveal the true extent of the crisis, its accelerating nature, and its consequences both now and in the medium and longer term.

The term “ecological public health” is increasingly being used to encapsulate a need to build health and well-being, henceforth, on ecological principles. Rayner and Lang ( 2012 ) observe that, despite appearing difficult and complex, Ecological public health “is now the 21st century ’s unavoidable task.” Thus, the already complex challenge of navigating human social complexity to deliver health, well-being, and greater equity, which has defined public health in Western society for several decades, is made more challenging still. The relationship of the environment and human health and well-being must be understood and addressed on vastly extended temporal and spatial scales.

The notion that the planet is a finite resource on which human activity can place intolerable pressure and that the consequences of doing so are potentially catastrophic has been around for some time (e.g., see Carson, 1962 ; Meadows et al., 1972 ). A contemporary evolution of this thinking is expressed by Rockstrom and colleagues. Their sentinel paper, first published in 2009 (Rockström et al., 2009 ) and updated in 2015 (Steffen et al., 2015 ), lists the large earth system processes that are urgently in need of stewardship if humanity is to remain safe into the future. Where applicable, it proposes thresholds beyond which nonlinear, abrupt, and potentially catastrophic changes in these systems might be expected. This thinking is used as a basis for defining a “safe operating space for humanity.” The authors propose nine “planetary boundaries.” Three of these—climate change, ocean acidification, and stratospheric ozone depletion—are major planetary systems where evidence exists of large-scale thresholds in the history of the planet history of the planet. Also included are systems of a rather different sort. These are the slow variables that buffer and regulate planetary resilience. These slow variables comprise interference with the nitrogen and phosphorus cycles; land-use change; rate of biodiversity loss; and freshwater use. Two parameters, air pollution and chemical pollution, are especially difficult to quantify, meaning that thresholds cannot yet be defined. It is emphasized that, while for understandable reasons, the nine systems are often discussed independently, they are interrelated in ways meaning that changes in one system have profound implications for the others. Rockstrom and colleagues observe that in the preindustrial era, all nine parameters were within the safe operating boundaries, and yet by the 1950s, change was underway, most evidently in the nitrogen cycle. By 2009 , according to their analysis, three planetary boundaries had been transgressed: climate change; rate of biodiversity loss; and the nitrogen cycle.

An implicit challenge in limiting global ecosystem damage and its multiple implications is how to achieve recognition among the public and policymakers that the choices they make either directly or indirectly cause ecosystem damage and related environmental change (Morris et al., 2015 ). Climate change is simply the most striking example, but comparable challenges over communication exist in relation to other planetary process and systems. The fundamental rethink of society, the economy, and the environment, which is necessary if health and well-being are to be built on ecological principles, will happen only if the true implications for health and well-being of a “business as usual” approach are understood, communicated, and challenged. For any population, the environmental changes that may ultimately have profound implications may take place in countries and regions well beyond their borders or may not occur for some time, conferring a temporal and/or spatial remoteness that diminishes the sense of urgency. Appreciating the importance of these “distal” pathways of ecosystem damage to human health and well-being demands a greater understanding of ecosystem services (the benefits human beings get from the natural environment) and of why they matter. It also demands a much fuller appreciation of the global connectivity of social, economic, and ecological systems (Morris et al., 2015 ; Adger et al., 2009 ).

When initiating our discussion of the role of environment in health, we observed that the modern public health era was built on an environmental conceptualization of public health. It is now inconceivable that health, well-being, health care, and equity in any of these domains can be delivered without rediscovering an environmental conceptualization of public health for the 21st century .

For Western society, ecological public health is likely to require a rethink of society, the economy, and our stewardship of the natural environment (Rayner & Lang, 2012 ). At the very least, it will demand pursuit, through policy and action, of outcomes that recognize a ‘quadruple bottom line’ measured in health and well-being, environmental quality, equity, and sustainability. The extent to which we embrace ecological principles will be evidenced in policies that address how we live (for example, the energy efficiency of our homes), how we move (particularly our reluctance to substitute travel in fossil-fueled cars with more active forms of travel); how we consume (notably how we source and produce food) and, of course how we obtain and conserve energy.

Taking Stock

Despite being necessarily selective, this article has sought to illustrate how perspectives on the role of the environment in human health and well-being have evolved over the course of the modern public health era. Perspectives can be seen to shift owing to changes in the nature of environmental hazards and risks that are themselves products of the evolution of how societies live, move around, consume, source their energy, and so on. Our understanding of the health relevance of the built and natural environments is also shaped by advances in scientific understanding and technology and a much wider economic, social, cultural, and even political context. In structuring our account, we have adopted a loose framework based on the “epidemiological eras,” elegantly articulated by two of the 20th century ’s leading epidemiologists (Susser & Susser, 1996 ). These eras are differentiated according to the dominant paradigm of the time concerning the causes of disease, each underpinned by analytical approaches to understand and prioritize risk.

The importance accorded to the environment as a mainstream public health issue arguably reached its lowest point in the decades following World War II when the tendency to regard health and disease as characteristics of individuals, rather than communities or populations, gained prominence. This approach diverted attention from social and environmental factors, divorcing health from place. Notions that humans are self-contained and impervious to context have now been largely swept away, not least because denial of a socioecological perspective hugely undermined attempts to address the most serious contemporary health challenges. Also instrumental in challenging the notion of the self-contained body has been an environmentalist movement with a particular interest in pesticide and other chemical contamination of the biosphere. The toxic effects of chemical contamination reinforce the reality of a body that is permeable and invariably in a state of intimate exchange with its surroundings. As Nash ( 2006 ) has observed, “ the singular and self-contained body of the early 20th century came, by the end of that century to seem distressingly porous and vulnerable to the modern landscape” (p. 13). We would simply add that humans exhibit comparable porosity and vulnerability to the social and economic context in which they exist.

We recognize that our account contains only limited reference to the regulatory context that has been so central to controlling the environment for public health. We consider it appropriate to sound a warning in this regard. The processes through which environment is monitored and regulated to protect human health and well-being are sometimes taken for granted. Yet, since the 1980s, pressures have mounted in most Western nations to ‘deregulate’ markets to maximize profit. These pressures have led to environmental and public health regulation being increasingly perceived by governments and markets as “red tape” and a barrier to economic enterprise. Pressure to loosen or even abandon aspects of environmental regulation has weakened formal controls, leaving society vulnerable to corporate excess and irresponsibility, with often serious impacts on public health (Oldenkamp et al., 2016 ). This is not to argue that regulation should be static. Rather, it should adapt to changing technological, social, and economic circumstances and should be appropriately funded whether it relates to the quality of the air we breathe, the water we drink, the buildings we live, learn, and work in, or the nutritional aspects of the food we eat. Neither do we deny the potential to exploit citizen science and the power of new technology to supplement conventional regulation (e.g., enabling vulnerable individuals to avoid hazardous exposures and the opportunities for personal pollution monitoring to improve research).

Mainly anthropogenic damage to planetary resources and ecosystems demands that, wherever we are in the world, public health agencies must understand not just the proximal threats to health and well-being that have been the targets of public health intervention throughout the modern public health era. They must also understand and move to prevent, counteract, and contain more distal threats to health and well-being. The distal threats derive from changes to environments that appear remote in space or time or involve a complex interaction of social, environmental, and economic influences. These are no longer abstract considerations. The unprecedented global connectivity of economic and social systems and the growing understanding of ecosystem interdependencies demand that the implications of human activity for health and well-being be recognized, understood, and addressed on a vastly extended temporal and spatial scale.

Only by build health and well-being on ecological principles (Ecological Public Health) will society effectively address the more distal threats to health and well-being from global ecosystem damage; the socioecological complexity of the proximal environment and the interconnections between these.

Conclusions

In this necessarily brief and artificially linear account, our intention has been to reinforce the enduring importance of the environment for health and well-being. Along the way, we have identified three factors that have marginalized the environment as a component of health and disease. We suggest that they continue to represent clear and present threats, undermining public health and, in the case of the latter, an existential threat to humankind.

The Threat from Medical Reductionism

This tendency to think of disease almost exclusively in terms of pathogenic agents and organic dysfunction marginalizes any influence outside the crucible of the laboratory. This trend was most evident in the decades following World War II but remains an ever-present threat.

The Separation of Health from Place

Closely related to medical reductionism is the tendency to downplay the importance of local context for life. The idea that if local environment matters, it does not matter much and, that when it comes to health and disease, the real action is not out there in the neighborhood and among the community but “over here” in the laboratory and at the level of the individual. Such perspectives are divisive. They create artificial barriers between many academic disciplines, including some medical specialties, and those working to manage and improve the local social and environmental context within which “permeable” human beings live out their lives.

The Denial of Ecology

Science now permits humans to understand the true extent to which their activities are plundering natural resources and harming the planetary systems and processes on which they depend. The pace of change is such that health, well-being, heath care, or anything approaching equity in these things will not be sustained in the medium to longer term without radically rethinking society, the environment, and the economy. The global connectivity of social, economic, and environmental systems means, ultimately, that no one is insulated from the threat whether by distance or socioeconomic circumstance. Ecological public health, the pursuit of health and well-being on ecological principles, has been described as the 21st century ’s unavoidable task. It demands recognition of the dynamic interconnections between people and their environment. Manifestly, we depend on the environment we inhabit, and we powerfully affect it. Among the clearest impediments to delivering ecological public health and preserving a viable environment for future generations are the belief that we can manipulate and conquer the natural environment without consequence, and the irresponsible capitalist imperative that subverts regulatory standards and damages and exploits the environment for profit. Both are revealed as transparent absurdities by an ecological understanding and analysis.

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January 28, 2011

The Link between the Environment and Our Health

Would people care more about the environment if they had a better understanding of how it affects them personally?

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Dear EarthTalk : Aren’t environmental issues primarily about health? Detractors like to trivialize environmentalists as “tree huggers,” but the bottom line is that pollution makes us sick, right? Wouldn’t people care more if they had a better understanding of that?— Tim Douglas, Stowe, Vt. No doubt many of the ways we harm our environment come back to haunt us in the form of sickness and death. The realization that the pesticide-laced foods we eat, the smokestack-befouled air we breathe and the petrochemical-based products we use negatively affect our quality of life is a big part of the reason so many people have “gone green” in recent years. Just following the news is enough to green anyone. Scientific American reported in 2009 that a joint U.S./Swedish study looking into the effects of household contaminants discovered that children who live in homes with vinyl floors—which can emit hazardous chemicals called phthalates—are twice as likely to develop signs of autism as kids in other homes. Other studies have shown that women exposed to high levels of polybrominated diphenyl ether (PBDE) flame retardants common in cushions, carpet padding and mattresses—97 percent of us have detectable levels of these chemicals in our bloodstreams—are more likely to have trouble getting pregnant and suffer from other fertility issues as a result. Cheaply produced drywall made in China can emit so much sulfur gas that it not only corrodes electrical wiring but also causes breathing problems, bloody noses and headaches for building occupants. The list goes on and on.... But perhaps trumping all of these examples is the potential disastrous health effects of global warming. Carbon dioxide emissions may not be directly responsible for health problems at or near their point of release, but in aggregate they can cause lots of distress. According to the Center for Health and the Global Environment at Harvard Medical School, climate change over the coming decades is likely to increase rates of allergies, asthma, heart disease and cancer, among other illnesses. Also, it is quite likely that, as global temperature rises, diseases that were previously found only in warmer areas of the world may show up increasingly in other, previously cooler areas, where people have not yet developed natural defenses against them. And the loss of rain forest that accompanies increases in temperature means less access to undiscovered medicines and degradation of the environment’s ability to sustain our species. Given the link between environmental problems and human health, more of us are realizing that what may seem like exorbitant up-front costs for environmental clean-up may well pay us dividends in the end when we see our overall health care costs go down and our loved ones living longer, healthier lives. To help bridge the understanding gap between environmental problems and human health, the nonprofit Environmental Health Sciences offers the free website, Environmental Health News , which features daily reports on research showing how man-made environmental problems correspond to a wide range of individual and public health problems. Even your local TV station or newspaper likely carries an occasional story about the health effects of environmental pollution. We don’t have to look very hard to find examples of environmental neglect leading to human suffering. But with newfound public awareness and the commitment of younger generations to a cleaner future, we are moving in a good direction. CONTACTS : Harvard Medical School Center for Health and the Global Environment, http://chge.med.harvard.edu ; Environmental Health News , www.environmentalhealthnews.org .

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Environmental Issues Essay for Students and Children

500+ words essay on environmental issues.

The environment plays a significant role to support life on earth. But there are some issues that are causing damages to life and the ecosystem of the earth. It is related to the not only environment but with everyone that lives on the planet. Besides, its main source is pollution , global warming, greenhouse gas , and many others. The everyday activities of human are constantly degrading the quality of the environment which ultimately results in the loss of survival condition from the earth.

Source of Environment Issue

There are hundreds of issue that causing damage to the environment. But in this, we are going to discuss the main causes of environmental issues because they are very dangerous to life and the ecosystem.

Pollution – It is one of the main causes of an environmental issue because it poisons the air , water , soil , and noise. As we know that in the past few decades the numbers of industries have rapidly increased. Moreover, these industries discharge their untreated waste into the water bodies, on soil, and in air. Most of these wastes contain harmful and poisonous materials that spread very easily because of the movement of water bodies and wind.

Greenhouse Gases – These are the gases which are responsible for the increase in the temperature of the earth surface. This gases directly relates to air pollution because of the pollution produced by the vehicle and factories which contains a toxic chemical that harms the life and environment of earth.

Climate Changes – Due to environmental issue the climate is changing rapidly and things like smog, acid rains are getting common. Also, the number of natural calamities is also increasing and almost every year there is flood, famine, drought , landslides, earthquakes, and many more calamities are increasing.

Above all, human being and their greed for more is the ultimate cause of all the environmental issue.

Get the huge list of more than 500 Essay Topics and Ideas

How to Minimize Environment Issue?

Now we know the major issues which are causing damage to the environment. So, now we can discuss the ways by which we can save our environment. For doing so we have to take some measures that will help us in fighting environmental issues .

Moreover, these issues will not only save the environment but also save the life and ecosystem of the planet. Some of the ways of minimizing environmental threat are discussed below:

Reforestation – It will not only help in maintaining the balance of the ecosystem but also help in restoring the natural cycles that work with it. Also, it will help in recharge of groundwater, maintaining the monsoon cycle , decreasing the number of carbons from the air, and many more.

The 3 R’s principle – For contributing to the environment one should have to use the 3 R’s principle that is Reduce, Reuse, and Recycle. Moreover, it helps the environment in a lot of ways.

To conclude, we can say that humans are a major source of environmental issues. Likewise, our activities are the major reason that the level of harmful gases and pollutants have increased in the environment. But now the humans have taken this problem seriously and now working to eradicate it. Above all, if all humans contribute equally to the environment then this issue can be fight backed. The natural balance can once again be restored.

FAQs about Environmental Issue

Q.1 Name the major environmental issues. A.1 The major environmental issues are pollution, environmental degradation, resource depletion, and climate change. Besides, there are several other environmental issues that also need attention.

Q.2 What is the cause of environmental change? A.2 Human activities are the main cause of environmental change. Moreover, due to our activities, the amount of greenhouse gases has rapidly increased over the past few decades.

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Essay on Environment and Human Health in English for Children and Students

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Life on this planet is interconnected. Nothing is isolated and everything has an impact on everything else. With concerns about climate change looming and becoming more immediate, we need to understand how our environment and health are connected.

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Long and Short Essay on Environment and Human Health in English

Below you will find some essays on environment and human health that can help you in your examinations, assignments. Select any environment and human health essay you need from the ones given below.

Short Essay on Environment and Human Health – Essay 1 (200 words)

Introduction

Human health is defined as the state of well-being with regards to the mental, physical and social aspects of the human condition. A person cannot be called healthy merely because of the absence of disease; he or she needs to be doing well in all ways to actually qualify as healthy.

Many factors play a role in determining our health – biological, nutritional, psychological and chemical. These factors can be influenced by internal and external conditions. Externally, the biggest factor that influences our health is our environment.

Environment and Human Health

Our environment isn’t merely the air we breathe, although that is a major component; it ranges from the water we drink to the soil we grow our food in to the sounds and noises in our surroundings. Each part affects us and thereby our health. With emissions from vehicles, factories and fires, our air supply is full of toxic chemicals that present the risk of lung cancer, heart disease and asthma. The food we eat is covered in pesticides that make soil less fertile and can be carcinogenic for us. The human body needs water to survive but our water sources are full of human and industrial wastes that create serious health issues.

We need to remember that we have to live in synergy with our environment. What we put out in it will come back to us. Unless we do something now, the earth will very soon no longer be a habitable planet.

Essay on Health and Environment – Essay 2 (300 words)

Human tendency has always been to subjugate our surroundings. We take pleasure in conquering and reshaping our environment as though it is beneath us and we are supreme. However, the simple truth is that humans are as dependent upon the environment as any other animals on the planet for our continued well-being. Therefore, if we harm our environment, we harm ourselves.

Health and Environment

Our physical, mental and social well-being is dependent upon our surroundings. What we put into the ecosystem is eventually cycled back to us. The pollutants we discard into this ecosystem find their way back through the air we breathe, the food we consume and the water we drink. Since we discard these pollutants because they are harmful to us, it follows that when we inadvertently consume them afterwards, they will still have harmful effects on our health.

Problems with this have been going on for quite some time. We use pesticides on our food crops because the chemicals kill the pests that could destroy the crops. However, those pesticides remain on the food when we consume them causing health problems ranging from skin problems to cancer. The pesticides also reduce the fertility of the soil ensuring that the next crop isn’t as bountiful.

Similarly, we discard human and industrial waste into whatever water body is conveniently close. But we also use the same water bodies for drinking water. Water pollution leads to diseases such as diarrhoea, dysentery, lead poisoning, polio and arsenicosis amongst others. The air is also polluted by all the gaseous emissions our activities release. Ranging from smoke from fires to emissions from vehicles and industries, these pollutants cause respiratory disorders such as asthma and bronchitis and can even result in lung cancer.

Environmental scientists have been raising the alarm for some time, but things are very critical now. Our unchecked activities have had adverse effects on the ecosystem and some of that damage is now irreversible. If we do not step up to the plate, we will render the earth uninhabitable very soon.

Essay on Environment Affects Humans Health – Essay 3 (400 words)

As per the definition by WHO, “human health is a state of complete physical, mental and social well-being and not merely the absence of disease and infirmity”. This well-being does not happen in isolation; it is affected by internal as well as external factors. Internal factors include issues inside the human body such as immune deficiencies, hormonal imbalances and genetic or congenital disorders.

External factors generally include three types of health hazards: physical hazards such as ultraviolet and radioactive radiations, noise pollution, carbon monoxide and CFCs; chemical hazards such as industrial effluents, heavy metals, pesticides and fossil fuel combustion; and biological hazards such as parasites, bacteria and viruses.

This clearly means that our health is, to a great extent, dependent upon our environment and the environmental factors that affect human health are mostly created by humans. What we release into our eco-system eventually finds its way back to us.

How Environment Affects Human Health

Since we are completely dependent on the environment to survive, it is safe to say that any changes to the environment will impact human well-being. However, the actual relationship between these two is more complex than we believed and isn’t always easy to assess. The most obvious impacts that we have seen are from deteriorating water quality, air pollution and unsanitary conditions. Radiation poisoning too has deadly consequences for human health.

The response to these issues has been an overall attempt to clean up our ecosystem. While that has worked for some countries, mostly in the developed world, it hasn’t been applied thoroughly in the developing countries of the world. Bilateral and multilateral agreements between countries have managed to address some of the more immediate concerns such as the emission of CFCs into the atmosphere and the damage done to the ozone layer by them.

The corporate world is also trying to lessen its carbon footprint and turning to ‘green’ solutions. However, there are many concerns that have yet to be addressed and are spiralling out of control such as biodiversity; on an average, one species dies out every day. In addition, it is becoming increasingly difficult to maintain a proper supply of food so that the world doesn’t starve.

We are simply too well-woven into our surroundings to be immune to the effects of any changes in those surroundings. The problem is that because the relationship between health and environment is complex, we aren’t motivated to make major changes; we’re waiting for irrefutable evidence. By the time we do get it, it might be too late.

Essay on Healthy Environment Healthy Life – Essay 4 (500 words)

We are aware of the complex strands that bind us to our environment. We have already started noticing the difference in our health and how it is related to what we do to our environment. However, a point to consider is that if a bad environment can cause harm to human health, a good environment can actually nurture it.

Unhealthy Environment Unhealthy Life

A report jointly published by the United Nations Environment Programme, the WHO, the Montreal Protocol on substances that deplete the ozone layer, the Convention on Biological Diversity and the Stockholm, Rotterdam and Basel conventions states that in the year 2012 alone, approximately 12.6 million people lost their lives due to conditions brought on by environmental pollution. UNEP also estimates that environmental degradation is behind 25 percent of all human diseases.

Environmental Pollution Impact

While environmental pollution may have an impact on everyone, research has shown that there are certain demographics that are more vulnerable to its effects – the young, the poor, women, the migrant workers and the elderly. In addition, diseases such as Ebola, Zika and SARS are emerging every few months and spreading because of overpopulation, too much livestock and the resultant environmental impact.

In order to stop the spread of these diseases, healthy ecosystems are essential. While tackling these diseases, such ecosystems can also bring about economic development, reduction of poverty, fewer risks to human well-being and the security of knowing that resources will not run out.

Mental Health

Increasingly, studies conducted on mental health are relating good mental health with exposure to nature. These studies have linked reduction of the symptoms of anxiety and depression and lowered stress levels to the presence of green space close by. In fact, people who moved to urban areas that are greener were seen to have improved mental health.

Water Contamination Impact

This is another example of environmental pollution affecting those in the lower economic strata. In countries where the income levels are middle to low, unavailability of clean water is responsible for 58 percent of the diarrhoea cases. Contaminated water and poor hygiene and sanitation are responsible for the deaths of around 3.5 million people. They also cause the premature deaths of around 25 percent of children younger than 14 years of age.

Approach to Resolution

There are several areas of immediate concern, based on the connection between poor human health and environmental degradation. Some of them are:

• Ecosystems that have degraded and natural systems on earth that are under pressure, which are more likely to cause disasters such as disease outbreaks, scarcity of food and natural disasters.
• Insufficient sanitation, poor hygiene and unsafe water that are the causes of deadly diseases, poor mental health and even hit economic productivity badly.
• Poor nutrition combined with dropping levels of physical activity, leading to the spread of non-communicable diseases.

Directly or indirectly, a healthy environment means healthy people. This is not to say that disease and malnutrition will be eliminated entirely but the incidences of these occurrences will reduce and millions of human lives will not be lost every year.

Long Essay on Impact of the Environment on Health – Essay 5 (600 words)

Human health or human well-being is affected by two main factors – individual traits or internal factors and ecological well-being or external factors. However, most of the time, when research is conducted on the human health condition, these two factors are investigated in isolation from each other. If one truly wants to answer the question – how does the environment affect individual health – one has to look at both factors in tandem. This becomes especially important now in light of climate change warnings and governmental indifference to them.

Impact of Environment on Health

The drawback with health related environmental studies or environment related health studies being conducted, especially those in the West, have narrowed their focus to concentrate on specific allergenic, infectious or toxic agents. They aren’t focusing on broader issues that cover psychological and social impacts too.

Some researchers agree that when studying human health it is important to take into account the impact of the environment of the people being studied. That impact can be seen in the fact that health inequalities exist as per the geography. In fact, health is impacted by the social and physical environment.

Additional research has also shown that there is a direct relationship between people’s mental health and the prevalence of green spaces; the more proximity to the green space, the better the mental health.

Socio-economic Differences in Environmental Impact

That the environment and human health are intertwined cannot be denied. However, that relationship works out differently in different places. In other words, depending upon where you are in the world, the immediate health concerns and the environmental factors affecting those concerns can be varied.

Developing countries tend to focus more on issues such as infant mortality, malnutrition and infectious diseases. The immediate environmental concerns in these countries are sanitation, hygiene, mining, ore processing, oil production and water quality. However, when one looks at developed nations, health concerns revolve around issues such as cancer, lung disease and heart disease. These countries have economies built around industries and those industries do not dispose off their hazardous wastes responsibly, thereby contaminating nearby water bodies and soil.

Considering these factors, it is no wonder that emphasis is placed more on the diseases than on the causes behind those diseases. The causes vary; the diseases may not necessarily do so.

Examples of Environmental Impact on Health Globally

Unfortunately, there isn’t any part of the globe that is free of environmental damage, not even the Polar Regions. If one goes looking, one will almost always find health concerns related to those environmental issues. It doesn’t help that countries such as China and India are developing very quickly. Their pace is such that environmental concerns aren’t being able to keep up with development.

Untreated human waste, industrial effluents, agricultural runoff and just plain old dumping are playing havoc with the ecology in both countries. Then there are the eastern European countries, many of which are former Soviet Union states. Over the past decades, hazardous waste such as heavy metals and nitrates were dumped without any plan or precaution. The result is badly contaminated ground water and surface water, not to mention the lowered quality of soil.

Some action is being taken finally where in such regions are being identified and efforts have been made to remediate, reclaim and restore the soil and surface water in such places; the effort comes too late, however, for the population that has already been exposed to these contaminants.

If one really wants to know what the environmental impact on health looks like, they need to stop looking at it in terms of discrete bubbles. They must study health disorders from an individual as well as an environmental perspective.

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Environment and health: an overview

In the 1980s biologists began to observe startling declines in frog populations around the world, even in isolated and relatively pristine environments. It appears that no single factor is responsible. Rather, the health and reproductive success of amphibians is being damaged by an increase in the intensity of ultraviolet (UV) light (because of thinning of stratospheric ozone), traces of globally distributed toxic chemicals, competition from introduced predator species and infections caused by virulent fungi and bacteria. 1 , 2 The declining health of frogs, birds and thousands of other organisms may be one of the clearest indications of environmental threats to human health. Although local environmental tragedies of climate change, species extinction and deforestation have marked every period of human history, today's environmental degradation is rapidly creating an unprecedented global crisis driven by population growth and industrialization. 3 , 4 , 5 , 6 , 7

For the first time, human beings are altering the basic operations of the Earth's atmosphere, geosphere and biosphere. In a recent essay, 4 prominent biologists noted with concern that "human alteration of Earth is substantial and growing. Between one-third and one-half of the land surface has been transformed by human action; the carbon dioxide concentration in the atmosphere has increased nearly 30% since the beginning of the Industrial Revolution; more atmospheric nitrogen is fixed by humanity than by all natural terrestrial sources combined; more than half of all accessible surface fresh water is put to use by humanity, and about one-quarter of bird species on Earth have been driven to extinction." 8 In 1992 the World Scientists' Warning to Humanity 9 was endorsed by more than 1600 scientists from 70 countries, among them 104 Nobel laureates, including most of the science prize recipients. The warning cited clear evidence of a growing environmental crisis. 9

Ten years ago Alexander Leaf wrote about the potential effects of global environmental change on human health. 10 This essay in CMAJ introduces a series of articles that continue Leaf's initial exploration. In each article, the authors will present a brief state-of-the-science review of their topic, an interpretation of the problem, and suggestions for medical and public health responses. The intent of the series is to examine the links between environmental change and human health and to suggest programs and policies that will protect both health and the environment. These essays do not address environmental hazards for which the association with disease is well understood, such as environmental lead poisoning, particulate and ozone air pollution, radon and tobacco smoke. Instead, these papers will focus on global environmental changes precipitated by human activity and their likely role in emerging health problems.

From a biomedical standpoint health is viewed as an attribute of the individual. The fields of medicine and public health acknowledge environmental causes of illness and assign risk to specific exposures. In the past decade, biologists, ecologists and physicians have developed the concept of ecosystem health. This idea recognizes that humans are participants in complex ecosystems and that their potential for health is proportional to the health of the ecosystem. 11 An ecosystem-based health perspective takes into account the health-related services that the natural environment provides (e.g., soil production, pollination and water cleansing) and acknowledges the fundamental connection between an intact environment and human health. 12

Environmental degradation exaggerates the imbalance between population and resources, increases the costs of development, and worsens the extent and severity of poverty. Population growth and the "corporatization" of agriculture and forestry have forced poor people onto land that is the least productive and ecologically the most fragile. In crowded or poor countrysides, people often abandon traditional and sustainable land use practices in favor of short-term survival strategies such as farming on steep slopes and living in areas threatened by flood or drought. The need for farmland, fuel wood and timber for export results in deforestation, which in turn increases soil erosion, flooding and mud slides and reduces agricultural productivity. In short, interactions between poverty, population growth and environmental degradation impede sustainable economic development and worsen population health. 13

The problems resulting from environmental change pose new challenges for traditional public health science. 14 The health effects of global change are often indirect and difficult to assess, and the quality of evidence for the health- related outcomes of global environmental change varies widely. 7 For example, the prevalence of malaria has increased worldwide, but no clear relation to climate change has been established. Similarly, exposure to UV light (especially UVB) increases skin cancer and cataract formation, but large studies across geographical areas with different levels of UV exposure have not been performed. Furthermore, the health science necessary to understand global environmental change is increasingly interdisciplinary and requires collaboration among meteorologists, chemists, biologists, agronomists, biologists and health scientists, over long periods. Organizing and funding such science is difficult. Finally, the science of global change frequently relies on computer models to suggest the direction of change, but politicians and policy-makers are loath to commit resources to predicted but unproven future outcomes.

It is important for scientists to anticipate the potential consequences of environmental change. 15 Serious environmental problems are often unknown or unrecognized. The stratospheric ozone hole produced by chloroflurocarbons, although anticipated, was discovered by accident. 16 At the time of the first major international conference on the environment, held in Stockholm in 1972, global warming, acid rain and tropical deforestation were not recognized as major problems. Explanations of the decline in amphibian populations, cancer outbreaks in fish and the bleaching of coral reefs are still inadequate today. Furthermore, change in natural systems may be sudden and nonlinear. For example, fish populations that have remained stable during long periods of intense harvesting may suddenly collapse.

Global environmental issues at this special moment in history are unique in their scope and consequences, and discussion of them may be emotionally and politically charged. 17 Global change may seem so remote from our daily lives that we become indifferent to the litany of environmental apocalypse. We may not perceive the actual degradation of the Earth. 18 Some of us distance may ourselves from the discussion because we find it frightening or overwhelming As a result, policy-makers and politicians are not pressed to confront the consequences of the continuing expansion of human enterprise. For example, climate change produced by the accumulation of greenhouse gases, primarily carbon dioxide, seems increasingly certain. The 1995 second report of the Intergovernmental Panel on Climate Change concluded that "man's impact on climate is discernible," and many climate scientists believe that we are already experiencing global warming effects. 19 But it is difficult for us to acknowledge that industrial carbon dioxide — invisible, odourless and nontoxic — is a pollutant. International political leadership has only recently begun to seek solutions to the global issues of climate change, toxic pollution, species loss and deforestation.

Two recent developments have drawn renewed attention to the health risks of persistent organic pollutants (also known as POPs): the identification of medical waste as a significant source of toxic pollution and the emergence of the new toxicological field of endocrine disruption. Medical waste incineration is a major source of the dioxin and mercury released into the environment. Almost all humans have measurable residues in their tissues of chlorinated hydrocarbon chemicals, including pesticides, polychlorinated biphenyls (PCBs) and dioxin. In some cases these levels approach the threshold of public health concern. 20 Pressured by advocacy organizations, the health care industry has begun efforts to better manage medical materials and waste. The second development is the emerging toxicological field of endocrine disruption. Endocrine disruptors are a class of chemicals, including many of the persistent organic pollutants, that imitate or block hormones. These chemicals produce a variety of reproductive and neurodevelopmental disturbances in wildlife, laboratory animals and humans, often at very low doses. Endocrine disruption, currently the object of renewed study by government, industry and academia, offers a new toxicological paradigm that may supplement carcinogenesis as the outcome of concern. 21 , 22

Public concern about environmental degradation in both rich and poor nations is developing into a broad environmental health movement. 23 But to argue, as some do, that the quality of human existence is improving because life expectancy is increasing and child mortality is decreasing in many parts of the world is to miss what McMichael has called the "essential newness" of environmental change. 14 The carrying capacity of the Earth may appear adequate at this moment in history, particularly for those of us in affluent countries. Economic development and improved access to public health programs have produced expected improvements in less developed countries. Although the world's population has increased fourfold in the last 150 years, the food supply has kept pace. But can we support another approximate doubling of the population by 2050, from 6 billion to 10 or 12 billion, the high-fertility forecast by the United Nations? 24 Will the food supply remain adequate? What are the health consequences of global warming and climate change? 25 What are the consequences of loss of biodiversity, forests and marine life? 26 Science has only begun to address these questions.

To protect the health of populations we must develop systems of food, energy and industrial production that can be sustained over generations. We also need value systems of stewardship, precaution and prevention to guide environmental protection and health promotion. Finding solutions to the threats posed by environmental change is the major health challenge of the next century. 27 , 28

Dr. McCally is with the Department of Community and Preventive Medicine, Mount Sinai School of Medicine, New York, NY.

Organization of the series "Environment and Health" was supported by a grant from the Jennifer Altman Foundation.

Correspondence to: Dr. Michael McCally, Department of Community and Preventive Medicine, Mount Sinai School of Medicine, New York NY 10029; fax 212 360-6965; [email protected]

Essay on Environmental Sustainability

Students are often asked to write an essay on Environmental Sustainability in their schools and colleges. And if you’re also looking for the same, we have created 100-word, 250-word, and 500-word essays on the topic.

Let’s take a look…

100 Words Essay on Environmental Sustainability

Understanding environmental sustainability.

Environmental sustainability is about making decisions that do not harm the environment. It’s about preserving nature for future generations.

Importance of Environmental Sustainability

Our survival depends on the environment. If we don’t sustain it, we risk losing resources like water and air. It’s crucial for our health and economy.

Ways to Achieve Sustainability

We can achieve sustainability by reducing waste, recycling, and using renewable energy. It’s about changing our lifestyles to protect the environment.

Environmental sustainability is crucial for our future. We all need to play our part to ensure our planet remains healthy.

250 Words Essay on Environmental Sustainability

Introduction to environmental sustainability.

Environmental sustainability is an integral aspect of our existence, intertwined with the notion of preserving the natural world for future generations. It encapsulates the concept of stewardship, wherein we are responsible for managing the Earth’s resources responsibly and efficiently.

The Imperative of Sustainable Practices

The current environmental crisis, characterized by climate change, deforestation, and biodiversity loss, underscores the urgency of sustainable practices. These practices aim to minimize the environmental footprint by reducing waste, conserving energy, and promoting recycling. They are not merely an ethical obligation, but a necessity for human survival.

Role of Innovation in Sustainability

Innovation plays a pivotal role in environmental sustainability. Technological advancements like renewable energy, green architecture, and waste management systems pave the way for a sustainable future. They provide practical solutions to environmental problems, enabling us to balance economic growth with ecological preservation.

Individual Responsibility and Collective Action

Environmental sustainability demands individual responsibility and collective action. Each of us can contribute by adopting sustainable lifestyles, such as minimizing waste, conserving water, and reducing energy consumption. Collective action, on the other hand, involves policy changes, corporate responsibility, and international cooperation.

In conclusion, environmental sustainability is a multidimensional concept, involving the careful management of natural resources, innovative technologies, and concerted human effort. As stewards of the Earth, we must strive to ensure the sustainability of our planet for future generations.

500 Words Essay on Environmental Sustainability

The importance of environmental sustainability.

The significance of environmental sustainability cannot be overstated. As the world’s population continues to grow, so does the demand for resources. This increased demand, coupled with unsustainable practices, has led to environmental degradation, loss of biodiversity, and climate change. By practicing environmental sustainability, we can help ensure that future generations inherit a planet that is as rich and diverse as the one we enjoy today.

Principles of Environmental Sustainability

Environmental sustainability is underpinned by several key principles. First, we must recognize the finite nature of our planet’s resources and strive to use them sparingly. Second, we must work towards reducing waste and promoting recycling. Third, we must strive to reduce our carbon footprint and promote renewable energy. Lastly, we must value and protect our biodiversity, recognizing the intrinsic worth of all living things.

Challenges to Environmental Sustainability

Role of individuals and institutions in promoting environmental sustainability.

Individuals and institutions have a crucial role to play in promoting environmental sustainability. Individuals can make a difference by making sustainable choices in their daily lives, such as reducing waste, recycling, and choosing renewable energy. Institutions, on the other hand, can implement sustainable practices in their operations and advocate for environmental sustainability at the policy level.

In conclusion, environmental sustainability is not just a buzzword; it is a necessity for our survival and the survival of future generations. It requires a collective effort from individuals, institutions, and governments alike. By understanding the importance of environmental sustainability and the principles that underpin it, we can all play a part in preserving our planet for future generations.

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