Environmental pollution harms the ecosystem, biodiversity, and humans. It can be either man-made or natural pollution, which can be caused by either intentional or unintentional human activity, or by natural disasters such as floods, droughts, earthquakes, and so on. The primary cause of this uncontrollable environmental pollution is deforestation caused by industrial waste, as well as an increase in air pollution, which depletes the ozone layer of the atmosphere. In this article, we will discuss Environmental Pollution and Health which will be helpful for UPSC exam preparation.

Harmful Effects of Pollution

• Pollution is currently one of the most serious public health and human rights challenges, disproportionately affecting the poor and vulnerable.
• Pollution is not just an environmental issue; it also has an impact on the health and well-being of entire societies.
• Despite the enormous impacts on human health and the global economy, as well as the availability of simple and affordable solutions, pollution has been undercounted and inadequately addressed in national policies and international development agendas.
• Pollution of any kind can have a negative impact on the environment and wildlife, as well as on human health and well-being.

Effect of Environmental Pollution on Health

Effect of Major Air Pollutants

• Significant amounts of gaseous pollutants are produced, which have a negative impact on human health.
• Human activities release billions of tonnes of pollutants into the atmosphere.
• Bronchitis, chest congestion, and wheezing are the most common and severe health problems caused by gaseous pollutants.
• These effects can be mitigated by reducing exposure to pollutants.
• Sulfur dioxide - It is a major cause of lung disease. It is responsible for nasal and mucus lining irritation, shortness of breath, fluid accumulation in tissues, oedema, and bronchospasm.
• Oxides of nitrogen - Oxides of nitrogen released from bus, truck, and two-wheeler exhausts irritate the eyes and lungs. Inhaling large amounts of these oxides can cause gum inflammation, internal bleeding, pneumonia, and even cancer.
• Carbon monoxide - It is known to be a highly toxic gas. When it enters the bloodstream, it completely inhibits the ability of oxygen to combine with haemoglobin. In fact, carbon monoxide has a 240-fold higher affinity for blood than oxygen.

Effect of Radioactive Pollution

• The effect of radiation on health is determined by a number of factors, including the energy, type and amount of radiation, the individual's age, and the body part exposed.
• In humans, ionizing radiation may have the following biological effects.
  • Carcinogenic effects - Ionizing radiation increases the risk of most cancers.
  • Mutagenic effects - Mutagenic effects change the genetic material, and the mutations are passed down to the offspring.
  • Teratogenic effects - The embryo's development is hampered, resulting in birth defects.

Effects of Water Pollution

• Chemical contaminants are found in drinking water throughout the water supply systems, ranging from barely detectable levels to levels that may endanger human health.
• It is difficult to determine the health effects of these contaminants, especially because researchers are still learning how chemicals react in the body to damage cells and cause illness.
• Toxic chemical doses have either acute or chronic health consequences. Acute effects usually occur almost immediately after a large dose of a chemical.
• Nausea, lung irritation, skin rash, vomiting, dizziness, and even death are examples of acute health effects.

Soil Pollution and its Consequences

• Soil pollution receives less attention than air and water pollution. However, soil pollution is gaining popularity.
• Nonetheless, the rapid rate of population expansion and urbanization exceeds the ecosystem's capacity for sustainability and recovery. This has essentially resulted in soil pollution.
• Agriculture is built on the soil. All crops for human consumption and animal feed are dependent on it. To some extent, accelerated corrosion is causing us to lose this important natural resource.
• In addition, massive amounts of man-made waste, such as sludge and other products from new waste treatment plants, as well as polluted water, are causing or contributing to soil pollution.
• To preserve the fertility and productivity of the soil, herculean control measures must be implemented, thereby improving the health of all living beings.
• Pollution occurs primarily when human activities disrupt natural elemental cycles or reservoirs.
• The primary sources of anthropogenic pollution can be broadly classified as energy production, industry, agriculture, transportation, and waste management.
• Pollution can have environmental, ecotoxicological, and human health consequences.

Environmental Degradation

• Environmental degradation is the result of the active interaction of socioeconomic, institutional, and technological actions.
• Environmental degradation is a process in which the natural environment is harmed in some way, reducing biological diversity and environmental health.
• Environmental degradation is defined as the deterioration of physical components of the environment caused by human activities to such an extent that it cannot be corrected by the environment's self-regulatory mechanism.
• This process can be completely natural, or it can be accelerated or caused by human activity. Many global organizations see environmental degradation as a major threat to communities and planets.
• Economic development, population growth, and urbanization, agricultural intensification, increased energy use, and transportation is all potential drivers of environmental change.
• Poverty is another major issue that contributes to environmental issues.
• The economics of environmental pollution, resource depletion, and degradation have been ignored in favor of issues of growth and expansion.
• Because of its rapidly increasing population, India is also experiencing environmental degradation.

Pollution and Health Report

Global

• Air pollution alone is responsible for 66.7 lakh deaths, according to a 2015 study.
• Pollution was responsible for an estimated 90 lakh deaths in 2019 (equivalent to one in every six deaths worldwide), a figure that has remained constant since the 2015 analysis.
• Ambient air pollution was responsible for 45 lakh deaths, hazardous chemical pollutants for 17 lakh, and lead pollution was responsible for 9 lakh deaths.

In India

• The majority of India's 16.7 lakh air pollution-related deaths were caused by PM2.5 pollution, with another 6.1 lakh deaths caused by household air pollution.
• Although the number of deaths from pollution sources associated with extreme poverty has decreased (such as indoor air pollution and water pollution), these decreases have been offset by an increase in deaths due to industrial pollution (such as ambient air pollution and chemical pollution).
• The Indo-Gangetic Plain suffers the most from air pollution. This region is home to New Delhi as well as many of the most polluted cities.
• Burning biomass in households is the single leading cause of air pollution deaths in India, followed by coal combustion and crop burning.
• Because India lacks a strong centralized administrative system to drive its air pollution control efforts, improvements in overall air quality have been limited and uneven.

Conclusion

Environmental Pollution has reached alarming proportions all over the world. Energy consumption and waste discharges have increased as a result of urbanization, industrialization, and economic development. Global environmental pollution, such as greenhouse gas emissions and acid deposition, as well as water pollution and waste management, are regarded as international public health issues that should be investigated from a variety of perspectives, including social, economic, legislative, and environmental engineering systems, as well as lifestyle habits that promote health and strengthen environmental systems to withstand contamination.

FAQs

MCQs

1. Which of the following is a major source of air pollution?

A) Solar panels
B) Wind turbines
C) Industrial emissions
D) Hydroelectric dams

2. What health issue is commonly associated with prolonged exposure to noise pollution?

A) Diabetes
B) Hearing loss
C) Skin cancer
D) Osteoporosis

3. Which of the following practices can help reduce water pollution?

A) Using chemical fertilizers
B) Disposing of waste in rivers
C) Treating industrial effluents before discharge
D) Increasing plastic production

4. Which pollutant is primarily responsible for the depletion of the ozone layer?

A) Carbon dioxide
B) Methane
C) Chlorofluorocarbons (CFCs)
D) Nitrogen oxides

5. What is the primary cause of soil pollution?

A) Overgrazing by livestock
B) Natural erosion processes
C) Disposal of industrial waste
D) Increased use of wind energy

GS Mains Questions and Model Answers

Q1: Analyze the impact of air pollution on public health and the measures that can be taken to mitigate its effects.

Answer: Air pollution significantly affects public health, causing respiratory diseases such as asthma, bronchitis, and chronic obstructive pulmonary disease (COPD). Long-term exposure to air pollutants like particulate matter and nitrogen dioxide increases the risk of cardiovascular diseases, stroke, and lung cancer. Vulnerable groups, including children, the elderly, and those with pre-existing health conditions, are particularly at risk. Mitigating the effects of air pollution requires stringent emission control measures, promoting clean energy sources, increasing green cover, and improving air quality monitoring. Public awareness campaigns and regulations to reduce industrial and vehicular emissions are also critical for combating air pollution.

Q2: Discuss the role of water pollution in the spread of diseases. What steps can be taken to address this issue?

Answer: Water pollution is a major contributor to the spread of waterborne diseases such as cholera, dysentery, and hepatitis. Contaminated water sources often contain pathogens, heavy metals, and chemicals, posing significant health risks to populations relying on these sources for drinking and sanitation. To address this issue, measures such as proper waste disposal, treatment of industrial effluents, and promoting access to safe drinking water are essential. Strengthening regulations on wastewater management, investing in sewage treatment infrastructure, and public awareness campaigns can further help reduce water pollution and safeguard public health.

Q3: Evaluate the challenges faced by governments in controlling environmental pollution and suggest effective strategies for mitigation.

Answer: Governments face numerous challenges in controlling environmental pollution, including limited resources, lack of public awareness, and resistance from industries. Rapid urbanization, industrial growth, and inadequate infrastructure further exacerbate pollution levels. Effective strategies for mitigation include enforcing strict environmental regulations, promoting sustainable practices, and investing in renewable energy. Developing efficient public transportation systems, encouraging waste segregation and recycling, and fostering public-private partnerships for pollution control technologies can also play a crucial role. International cooperation and adherence to global agreements on environmental protection are essential for comprehensive pollution control efforts.

Previous Year Questions on Environmental Pollution and Health

1. UPSC CSE Prelims 2020:

Question: Which of the following is a primary source of indoor air pollution?

A) Solar panels
B) Burning of biomass for cooking
C) Use of electric stoves
D) Wind turbines

Answer: (B)

Explanation: Burning biomass for cooking releases pollutants that contribute to indoor air pollution, affecting human health.

2. UPSC CSE Mains 2018 (GS Paper 3):

Question: "Examine the role of environmental pollution in the emergence of new health challenges. Suggest measures to address these challenges."

Answer: Environmental pollution has led to the emergence of new health challenges, including respiratory diseases, waterborne illnesses, and the rise of antimicrobial resistance due to pollutants in water bodies. Air and water pollution contribute to chronic conditions and increased healthcare burdens. Addressing these challenges requires stringent pollution control policies, public health infrastructure improvements, and community-based initiatives to reduce exposure. Promoting renewable energy, efficient waste management, and raising public awareness about pollution prevention can mitigate its impact on health.