Key diseases
Air pollution increases the risk of illness and death from several major diseases.
An extensive body of scientific evidence shows that breathing polluted air over a long period of time contributes to an increased risk of illness and death. Key health problems associated with air pollution include ischemic heart disease, lung cancer, chronic obstructive pulmonary disease (COPD), lower-respiratory infections (such as pneumonia), stroke, type 2 diabetes, and a range of neonatal diseases related primarily to low birth weight and preterm birth. Ongoing studies continue to explore air pollution’s role in the development of additional conditions including asthma, cognitive disorders, and other effects, but these are not currently included in the Global Burden of Disease (GBD) estimates.
Figure P. Percentage of global deaths from specific causes attributable to total air pollution. Use the data app to view and download cause-specific data for your country.
Air pollution’s contribution to disease is not borne equally across the world. For example, while air pollution accounts for about 20% of deaths from ischemic heart disease globally, this ranges from 5% in higher income regions of the world to over 30% in the sub-Saharan Africa and South Asia regions. These variations reflect not only air pollution exposures but also other social, economic, and demographic factors that affect a population’s underlying health status and level of vulnerability, including access to medical care.