People in areas of the United States with high levels of a certain kind of air pollution have a greater risk of dementia, a new study found.
The study, published Monday in the journal JAMA Internal Medicine, looked at data from 27,857 survey participants between 1998 to 2016. About 15%, or 4,105, developed dementia during the study period, and all lived in areas of the US with higher concentrations of particle pollution than those who didn’t develop dementia, the researchers found.
The new study cannot determine the the exact mechanism connecting particle pollution and dementia, but scientists have some theories. These tiny pollution particles could be getting into the brain through the nose and causing neuronal cell death that’s connected to dementia. It’s also possible that particle pollution is modifying inflammatory proteins that act on the brain. Dr.
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