Recent research reveals that increased exposure to traffic-related air pollution is linked to a higher likelihood of amyloid plaques in the brain, associated with Alzheimer’s disease, suggesting environmental factors could contribute to Alzheimer’s in genetically unaffected individuals.
For the study, researchers examined the brain tissue of 224 people who agreed to donate their brains at death to advance research on dementia. The people had died at an average age of 76. “This suggests that environmental factors such as air pollution could be a contributing factor to Alzheimer’s in patients in which the disease cannot be explained by genetics,” Huels said.
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