Indoor Air Quality Survey. Prepared for educational purposes based on real measurements made in May 25, 2014.

In 2014, WHO reports that in 2012 around 7 million people died - one in eight of total global deaths – as a result of air pollution exposure. This finding more than doubles previous estimates and confirms that air pollution is now the world’s largest single environmental health risk. Reducing air pollution could save millions of lives. In particular, the new data reveal a stronger link between both indoor and outdoor air pollution exposure and cardiovascular diseases, such as strokes and ischaemic heart disease, as well as between air pollution and cancer. This is in addition to air pollution’s role in the development of respiratory diseases, including acute respiratory infections and chronic obstructive pulmonary diseases. Included in the assessment is a breakdown of deaths attributed to specific diseases, underlining that the vast majority of air pollution deaths are due to cardiovascular diseases as follows: Outdoor air pollution-caused deaths – breakdown by disease: 40% – ischaemic heart disease; 40% – stroke; 11% – chronic obstructive pulmonary disease (COPD); 6% - lung cancer; and 3% – acute lower respiratory infections in children. Indoor air pollution-caused deaths – breakdown by disease: 34% - stroke; 26% - ischaemic heart disease; 22% - COPD; 12% - acute lower respiratory infections in children; and 6% - lung cancer. “The risks from air pollution are now far greater than previously thought or understood, particularly for heart disease and strokes,” says Dr Maria Neira, Director of WHO’s Department for Public Health, Environmental and Social Determinants of Health. “Few risks have a greater impact on global health today than air pollution; the evidence signals the need for concerted action to clean up the air we all breathe.”