Teresa Champion, whose 32-year-old son has autism, said she worries about the repercussions of Trump's reversal of decades of medical advice to pregnant women.

The Food and Drug Administration is set to tell physicians that using acetaminophen, a key ingredient in Tylenol, during pregnancy can be associated with increased risk of autism and that pregnant women should use it only in extreme circumstances.

Health and Human Services Secretary Robert F. Kennedy Jr. has spent years suggesting theories about what causes autism.

However, just last month, Trump's own Food and Drug Administration said it "has not found clear evidence that appropriate use of acetaminophen during pregnancy causes" birth or development issues.

The parent company of Tylenol said it's "the safest pain reliever optio

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