The claim that Tylenol (acetaminophen) causes autism has been publicly stated by President Donald Trump and his administration in 2025. President Trump announced that the U.S. Food and Drug Administration (FDA) would notify physicians about a possible link between acetaminophen use during pregnancy and an increased risk of autism. He cautioned against the use of Tylenol during pregnancy unless absolutely necessary, especially warning expectant mothers to avoid it except for high fevers. This has stirred significant controversy and alarm in the medical community. However, scientific experts widely disagree with this claim. Major medical organizations and research studies have found no definitive causal relationship between Tylenol use in pregnancy and autism. Many studies have shown mixed or limited evidence, with some indicating slight associations and others finding no link at all. Leading researchers and autism science foundations have called the statements misrepresentations or misleading, emphasizing that autism likely arises from complex genetic and environmental factors rather than a single cause like Tylenol. Tylenol's manufacturer also strongly disputes the claim, affirming that rigorous science does not support acetaminophen causing autism. In summary, the assertion that Tylenol causes autism was publicly made by President Trump and his administration in 2025, but this claim is not supported by conclusive scientific evidence, and experts warn it could cause undue anxiety among pregnant women and parents.