Study: Air pollution linked to brain aging

The New York Times “Well” blog reports a study published in Stroke suggests that air pollution may be “linked to premature aging of the brain.” Researchers conducted MRI examinations on participants and “gathered data on how close the people lived to major highways.”

After controlling for factors such as health, lifestyle and socioeconomic differences, “they found that compared with people exposed to the lowest levels of PM 2.5, those with the highest exposure had a 46 percent increased risk for covert brain infarcts, the brain damage commonly called ‘silent strokes.’”

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