Air pollution is one of the leading causes of health complications and mortality worldwide, especially affecting lower-income groups, who tend to be more exposed and vulnerable. This study documents the relationship between ambient air pollution exposure and poverty in 211 countries and territories.... Using the World Health Organization’s (WHO) 2021 revised fine particulate matter (PM2.5) thresholds, we show that globally, 7.3 billion people are directly exposed to unsafe average annual PM2.5 concentrations, 80 percent of whom live in low- and middle-income countries. Moreover, 716 million of the world’s lowest income people (living on less than $1.90 per day) live in areas with unsafe levels of air pollution, especially in Sub-Saharan Africa. Air pollution levels are particularly high in lower-middle-income countries, where economies tend to rely more heavily on polluting industries and technologies. These findings are based on high-resolution air pollution and population maps with global coverage, as well as subnational poverty estimates based on harmonized household surveys.
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The World Health Organization (WHO) highlights the significant health risks associated with household air pollution, primarily resulting from the use of inefficient and polluting fuels and technologies for cooking, heating, and lighting. In 2020, approximately 2.1 billion people—about one-third of... the global population—relied on open fires or inefficient stoves fueled by kerosene, biomass (such as wood, animal dung, and crop waste), and coal. This exposure led to an estimated 3.2 million deaths, including over 237,000 deaths of children under the age of five. The pollutants emitted from these sources contribute to a range of health issues, including respiratory infections, heart disease, stroke, chronic obstructive pulmonary disease, and lung cancer. The WHO emphasizes the urgent need for transitioning to cleaner fuels and technologies to mitigate these health risks.
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Background: The impacts of air pollutants on health range from short-term health impairments to hospital admissions
and deaths. Climate change is leading to an increase in air pollution.
Long-term exposure of humans to air pollution enhances the risk of cardiovascular and respiratory diseases. A novel Global Exposure Mortality Model (GEMM) has been derived from many cohort studies, providing much-improved coverage of the exposure to fine particulate matter (PM2.5). We applied the GE...MM to assess excess mortality attributable to ambient air pollution on a global scale and compare to other risk factors.
Methods and results
We used a data-informed atmospheric model to calculate worldwide exposure to PM2.5 and ozone pollution, which was combined with the GEMM to estimate disease-specific excess mortality and loss of life expectancy (LLE) in 2015. Using this model, we investigated the effects of different pollution sources, distinguishing between natural (wildfires, aeolian dust) and anthropogenic emissions, including fossil fuel use. Global excess mortality from all ambient air pollution is estimated at 8.8 (7.11–10.41) million/year, with an LLE of 2.9 (2.3–3.5) years, being a factor of two higher than earlier estimates, and exceeding that of tobacco smoking. The global mean mortality rate of about 120 per 100 000 people/year is much exceeded in East Asia (196 per 100 000/year) and Europe (133 per 100 000/year). Without fossil fuel emissions, the global mean life expectancy would increase by 1.1 (0.9–1.2) years and 1.7 (1.4–2.0) years by removing all potentially controllable anthropogenic emissions. Because aeolian dust and wildfire emission control is impracticable, significant LLE is unavoidable.
Conclusion
Ambient air pollution is one of the main global health risks, causing significant excess mortality and LLE, especially through cardiovascular diseases. It causes an LLE that rivals that of tobacco smoking. The global mean LLE from air pollution strongly exceeds that by violence (all forms together), i.e. by an order of magnitude (LLE being 2.9 and 0.3 years, respectively).
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Air pollution is the second leading cause of deaths from noncommunicable diseases (NCDs) after tobacco smoking, according to WHO.
In 2020, emissions of all key air pollutants in the 27 Member States of the EU (EU-27) continued to decline, maintaining a trend seen since 2005. This was the case despite an increase in gross domestic product (GDP) over the same period.
Residential, commercial and institutional energy consumption ...was the principal source of particulate matter in 2020. The manufacturing and extractive industry was also a significant source, while agriculture was an equally important source of PM10. Between 2005 and 2020, emissions of particulate matter, PM10 and PM2.5, fell by 30% and 32%, respectively.
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The WHO fact sheet on household air pollution highlights that around 2.1 billion people rely on solid fuels like wood and coal for cooking, using open fires or inefficient stoves. This leads to severe indoor air pollution, contributing to about 3.2 million premature deaths each year, including over ...237,000 children under five. Health impacts include strokes, heart disease, COPD, and lung cancer. Women and children are particularly affected due to their roles in cooking and fuel gathering. WHO calls for the adoption of clean energy solutions, such as electricity and solar power, to mitigate the health risks associated with household air pollution.
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The WHO fact sheet on household air pollution highlights that around 2.1 billion people rely on solid fuels like wood and coal for cooking, using open fires or inefficient stoves. This leads to severe indoor air pollution, contributing to about 3.2 million premature deaths each year, including over ...237,000 children under five. Health impacts include strokes, heart disease, COPD, and lung cancer. Women and children are particularly affected due to their roles in cooking and fuel gathering. WHO calls for the adoption of clean energy solutions, such as electricity and solar power, to mitigate the health risks associated with household air pollution.
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The Our World in Data webpage on air pollution provides an extensive overview of the global impact of air pollution on health and the environment. It presents data on sources of pollution, such as industry, vehicles, and domestic energy use, and highlights the associated health risks, including resp...iratory and cardiovascular diseases. The site emphasizes that air pollution is one of the leading environmental risk factors for premature deaths worldwide, particularly affecting low- and middle-income countries. It also discusses trends in air pollution levels over time and the effectiveness of policy interventions in reducing pollution and improving public health.
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The World Health Organization (WHO) fact sheet on ambient (outdoor) air quality and health highlights the significant health risks posed by outdoor air pollution. It reports that in 2019, ambient air pollution was responsible for approximately 4.2 million premature deaths globally, primarily due to ...exposure to fine particulate matter (PM2.5), which leads to cardiovascular and respiratory diseases, as well as cancers. The fact sheet emphasizes that 99% of the global population lived in areas exceeding WHO air quality guidelines in 2019, with low- and middle-income countries bearing the highest burden. To mitigate these health impacts, WHO advocates for policies and investments that promote cleaner transportation, energy-efficient housing, improved waste management, and access to clean household energy.
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The World Health Organization (WHO) fact sheet on ambient (outdoor) air quality and health highlights the significant health risks posed by outdoor air pollution. It reports that in 2019, ambient air pollution was responsible for approximately 4.2 million premature deaths globally, primarily due to ...exposure to fine particulate matter (PM2.5), which leads to cardiovascular and respiratory diseases, as well as cancers. The fact sheet emphasizes that 99% of the global population lived in areas exceeding WHO air quality guidelines in 2019, with low- and middle-income countries bearing the highest burden. To mitigate these health impacts, WHO advocates for policies and investments that promote cleaner transportation, energy-efficient housing, improved waste management, and access to clean household energy.
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The webpage from the Pan American Health Organization (PAHO) focuses on the significant health impacts of air pollution in the Americas. It explains how exposure to air pollutants contributes to various health issues, including respiratory and cardiovascular diseases, leading to premature deaths. Th...e site highlights key sources of air pollution, such as vehicle emissions, industrial activities, and household energy use. PAHO emphasizes the need for effective public health policies, cross-sector collaboration, and sustainable practices to reduce pollution levels and protect public health in the region.
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The webpage from the Institute for Health Metrics and Evaluation (IHME) provides an analysis of air pollution as a significant global health risk. It details how air pollution contributes to severe health problems, including respiratory diseases and increased mortality rates. The site explains diffe...rent types of air pollution, such as ambient particulate matter and household air pollution, and their respective impacts on health. It emphasizes the global burden of disease caused by pollution, underscoring the importance of reducing exposure through policy and public health interventions to improve overall health outcomes.
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PATS and ERS
Paediatric Webinar Series
Air pollution and the lung in children:
the evidence for exposure and prevention measures
Aerosol pollutants are known to raise the risk of development of non-communicable respiratory diseases (NCRDs) such as asthma, chronic bronchitis, chronic obstructive pulmonary disease, and allergic rhinitis. Sub-Saharan Africa’s rapid pace of urbanization, economic expansion, and population growt...h raise concerns of increasing incidence of NCRDs. This research characterizes the state of research on pollution and NCRDs in the 46 countries of Sub-Saharan Africa (SSA). This research systematically reviewed the literature on studies of asthma; chronic bronchitis; allergic rhinitis; and air pollutants such as particulate matter, ozone, NOx, and sulfuric oxide.
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Over the reporting period, economic actors continued to carry out their activities with little regard for their impacts on the livelihoods of the communities living in the surrounding areas. In Doo Tha Htoo (Thaton) District, cold dust from a Tatmadaw-run cement factory contaminated nearby waterways... during the rainy season. As a result, civilians from at least 15 villages faced water shortages. In Mu Traw (Hpapun) and Kler Lwee Htoo districts, gold mining activities damaged forests and polluted water and soils in several village tracts. In both cases, the economic actors involved failed to secure the free, prior and informed consent (FPIC) of the local population, and did not compensate the affected communities for the damage caused.
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Community Health Volunteers
Harmful particle pollution is one of our nation’s most common air pollutants. Use the chart below to help reduce your exposure and protect your health. For your local air quality forecast, visit www.airnow.gov
Lancet Planet Health 2021; 5: e542–52