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Comment by crazygringo

> With increasing evidence that chronic exposure to PM2.5, a neurotoxin, not only damages lungs and hearts but is also associated with dementia, probably not.

PM2.5 is not a neurotoxin, that's an absurd thing to say.

It's literally any particles under a certain size. Whether it's a neurotoxin is necessarily going to depend on what the substance is made of.

Whether your PM2.5 exposure is coming from automobiles or wildfires or a factory, the potential outcomes may be different in different areas of the body. Heck, my PM2.5 meter skyrockets whenever I cook anything in a frying pan, because many of the aerosolized oil droplets are PM2.5.

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