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Wildfire Smoke Is Even More Dangerous Than Anyone Knew


Smoke exposure, researchers have found, raises the risk of dementia, poor mental health, fertility problems, and neurodegenerative diseases.

While there’s still a lot more to learn, wildfire smoke is thought to be especially insidious compared to other sources of air pollution; its smaller particle size, intermittent spikes, and higher concentration of inflammatory compounds make it more dangerous. New research published in the journal Science Advances in June found that the fine particulate matter in smoke resulted in from 52,500 to 55,700 premature deaths from 2008 to 2018 in California. According to the study, published in the journal JAMA Neurology, the odds of a dementia diagnosis rose by 18 percent for every microgram per cubic meter increase in wildfire pollution over three years, a relatively small amount.

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wildfire smoke