Traffic-related air pollution linked to more signs of Alzheimer’s in brain

People with higher exposure to traffic-related air pollution were more likely to have high amounts of amyloid plaques in their brains associated with Alzheimer’s disease after death, according to a study published in the February 21, 2024, online issue of Neurology. Researchers looked at fine particulate matter, PM2.5, which consists of pollutant particles of less than 2.5 microns in diameter suspended in air.

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