Prenatal Tylenol Unlikely to Cause Autism, Danish Study Finds

A Danish nationwide study of more than 1.5 million children (born 1997–2022) found autism diagnosed in 1.8% of offspring exposed to Tylenol in the womb and 3% of unexposed children. After accounting for factors like dose and trimester, no link between prenatal acetaminophen use and autism emerged; findings align with a 2024 Swedish study. The FDA has discussed potential label changes, but evidence remains inconclusive. Pregnant women should use acetaminophen as needed at the lowest effective dose for the shortest possible time.