World Health Organization (WHO) reported that in 2012 about 7 million people (1 in 8 of total global deaths) died of air pollution exposure, making it the world's largest single environmental health risk.
The report broke down the cause of death into "indoor" and "outdoor pollutions. Below shows the summary of the report:
Outdoor air pollution-caused deaths:
- 40% – ischaemic heart disease
- 40% – stroke
- 11% – chronic obstructive pulmonary disease
- 6% - lung cancer
- 3% – acute lower respiratory infections in children
- caused 2.9 million deaths
- 2.6 million deaths from South-East Asia and Western Pacific Region
- 34% - stroke
- 26% - ischaemic heart disease
- 22% - chronic obstructive pulmonary disease
- 12% - acute lower respiratory infections in children
- 6% - lung cancer
- caused 4.3 million death
- 3.3 million deaths from South-East Asia and Western Pacific Region
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