GoKawiilStudies link airborne particle pollution to brain damage and dementia risk
Washington Post reporting cited by Futurism describes several recent studies finding that microscopic airborne particles can cross the blood-brain barrier and accumulate in brain tissue, including regions like the amygdala. UK Biobank data covering roughly half a million people found those with the highest exposure to fine particulate matter were 14 percent more likely to develop dementia, alongside reduced brain volume on scans.