There’s a Horrifying Link Between Dementia and Car Pollution

Air pollution caused by traffic can leave your health feeling like it was hit by a car—causing and worsening problems like asthma, allergies, and respiratory diseases like bronchitis and COVID-19. Now a new paper suggests that there’s a link between traffic pollution and another horrible illness: dementia.

A meta-analysis published Wednesday in the paper Neurology found that people who lived in areas with higher rates of traffic pollution had an increased risk of dementia. While the link doesn’t conclusively prove that the pollution causes the neurodegenerative condition, the study’s authors...