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This makes me very happy I moved out of a city with an air quality rating of F to a city with an A.

Hopefully the 10 years I spent in Chicago don't come back to haunt me later in life.

Since air (at least in the USA) is overall much cleaner than it was a generation or two ago, I wonder how this squares with the seemingly increasing trend of dementia cases. Maybe just people living longer overall, and dementia being (usually) a disease of old age, we see more of it?

It’s probably more that people getting dementia now received damage 20-30 years ago which took time to manifest. That and varying diagnostic criteria and other variables like fitness.

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