Read the full story in Environmental Factor.
An NIEHS-funded study of people who received Medicare showed that long-term exposure to ambient fine particulate matter (PM2.5) and ozone may increase the risk of premature death. Both are components of air pollution, and the risk occurred even at levels below the National Ambient Air Quality Standards.
Citation: Di Q, Wang Y, Zanobetti A, Wang Y, Koutrakis P, Choirat C, Dominici F, Schwartz JD. 2017. Air pollution and mortality in the Medicare population. N Engl J Med 376(26):2513–2522.