Low levels of PM linked with premature death

Short-term exposures to tiny particles (PM2.5) and ozone — even at levels well below current United States national safety standards — were linked to higher risk of premature death among the elderly in the US, according to a new study from Harvard T.H. Chan School of Public Health. The risk was even higher among elderly who were low-income, female, or black.

“This is the most comprehensive study of short-term exposure to pollution and mortality to date,” said Francesca Dominici, a senior author of the study. “We found that the mortality rate increases almost linearly as air pollution increases. Any level of air pollution, no matter how low, is harmful to human health.”

The study “Association of Short-Term Exposure to Air Pollution with Mortality in Older Adults” (December 2017). Published in the Journal of the American Medical Association (JAMA): https://www.hsph.harvard.edu/news/press-releases/air-pollution-premature...


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