Air pollution tied to Alzheimer's

Research studies from around the world are pointing to air pollution as a cause of Alzheimer’s. This is yet another reason to support clean air regulations, along with a switch to clean power and electric vehicles. It’s also a reason to thin overgrown forests and fight climate change.


As they reported in the National Bureau of Economic Research last year, Bishop, Kuminoff, and Ketcham determined that air pollution could indeed cause dementia, specifically Alzheimer’s dementia. In counties that had to quickly comply with the new air quality standards, older people developed Alzheimer’s at lower rates than their peers in counties where the new rules didn’t apply. Annual exposure to an average of one more microgram of fine particle pollution per cubic meter of air (an amount well within the range of difference you could see if you moved from a clean neighborhood to a more polluted neighborhood) raised the typical US elder’s risk of dementia as if they had aged 2.7 additional years. The authors estimated that the size of this elevated risk approached that of other well-known dementia drivers, including hypertension and heart disease.


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