Air pollution is known to increase the risk for stroke and other cerebrovascular disorders. But now researchers have found it is also linked to premature aging of the brain.
The study, in the May issue of Stroke, used data on 943 men and women over 60 who were participants in a larger health study. Researchers did M.R.I. examinations and gathered data on how close the people lived to major highways. They also used satellite data to measure particulate matter smaller than 2.5 micrometers, or PM 2.5, a form of pollution that easily enters the lungs and bloodstream.
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