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Air pollution directly linked to increased dementia risk
Long-term exposure accelerates the development of Lewy body dementia and Parkinson’s disease with dementia in people who are predisposed to the conditions.
The study found that PM 2.5 exposure does not necessarily induce Lewy body dementia, but “accelerates the development,” in people who are already genetically predisposed to it, says Hui Chen, a clinician–neuroscientist at the University of Technology Sydney in Australia. Studies have suggested that long-term exposure to air pollution from car-exhaust, wildfires and factory fumes, is linked with increased risks of developing neurodegenerative illnesses, including Parkinson's disease with dementia 2. Study co-author Xiaobo Mao, who researches neurodegenerative conditions at Johns Hopkins University in Baltimore, Maryland, says he and his colleagues wanted to determine if PM 2.5 exposure also influenced the risk of developing Lewy body dementia.
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