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New Danish Study Finds No Link Between Tylenol Use in Pregnancy and Autism

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A recent study conducted in Denmark, involving over 1.5 million children born between 1997 and 2022, concluded that the use of Tylenol (acetaminophen) during pregnancy does not correlate with an increased risk of autism in children. Among those exposed to the medication in utero, only 1.8% were diagnosed with autism, compared to 3% in the unexposed group. This finding persisted even after accounting for various risk factors. Previous studies, including a 2024 Swedish study, also found no significant association. However, a 2025 review suggested potential links to neurodevelopmental disorders, prompting the FDA to consider updating acetaminophen labeling to warn of possible risks. Medical organizations have criticized claims suggesting a definitive link between Tylenol and autism, emphasizing the need for careful use during pregnancy.

Key Details: • Study analyzed data from over 1.5 million children born from 1997 to 2022. • Only 1.8% of children exposed to Tylenol were diagnosed with autism, compared to 3% of those not exposed. • FDA is considering changes to acetaminophen labeling regarding pregnancy use risks. • Medical experts advise using acetaminophen cautiously during pregnancy.

health fda pregnancy autism tylenol

People & Organizations

Donald TrumpDenmarkFDAUnited StatesRobert F. Kennedy, Jr.JAMA Pediatrics

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