Washington: Older women might wonder why they are unable to recall names or places or where they keep their things. Chronic exposure to particulate air pollution might be to blame, says a new finding.Such women, exposed to higher levels of ambient particulate matter over long term, experienced more decline in their cognitive functioning (process by which one becomes aware of, perceives or comprehends ideas) over a four-year period.Higher levels of long-term exposure to both coarse and fine particulate matter, usually suspended in air, were linked with significantly faster cognitive decline.Fine particulate matter are small particles, 30 times thinner than human hair, while coarse particulate matter are four or five times the size of fine particles.
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