Researchers looked at more than 200,000 births in Southern California from 2006 to 2014, including 3,356 in which children were diagnosed with autism by age 5. They found that expectant mothers exposed to one to five days of any wildfire smoke particles during the third trimester had children with an elevated risk of autism compared to those not exposed.
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January 24, 2026Researchers looked at more than 200,000 births in Southern California from 2006 to 2014, including 3,356 in which children were diagnosed with autism by age 5. They found that expectant mothers exposed to one to five days of any wildfire smoke particles during the third trimester had children with an elevated risk of autism compared to those not exposed.