A systematic review of the relation between long-term exposure to ambient air pollution and chronic diseases.
“Exposure to PM2.5 was also associated with an increased risk of mortality from lung cancer (range: 15% to 21% per a 10 microg/m3 increase) and total cardiovascular mortality (range: 12% to 14% per a 10 microg/m3 increase).”
http://www.ncbi.nlm.nih.gov/pubmed/19235364
“Exposure to PM2.5 was also associated with an increased risk of mortality from lung cancer (range: 15% to 21% per a 10 microg/m3 increase) and total cardiovascular mortality (range: 12% to 14% per a 10 microg/m3 increase).”
http://www.ncbi.nlm.nih.gov/pubmed/19235364