Long-term exposure to air pollution is associated with lower scores on tests of mental acuity, researchers have found. And one reason may be that air pollution causes changes in brain structure that resemble those of Alzheimer’s disease.
https://www.nytimes.com/2019/11/25/well/mind/air-pollution-brain-dementia-alzheimer-memory.html
https://www.nytimes.com/2019/11/25/well/mind/air-pollution-brain-dementia-alzheimer-memory.html