Does Tylenol use during pregnancy cause autism? Here's what science says [View all]

On Sept. 22, 2025, U.S. President Donald Trump suggested that Tylenol, a widely used pain reliever, was linked to an increased risk of autism and urged pregnant women to avoid taking the drug.

-snip-

No evidence Tylenol causes autism

While some studies have suggested a potential link between prenatal acetaminophen exposure and an increased risk of autism in children, others have found no such connection. No study to date has proven that acetaminophen use during pregnancy causes autism, according to multiple experts.

"There is no definitive or even strong evidence that Tylenol use during pregnancy causes autism," Follmer told Snopes.

Dr. Steven J. Fleischman, president of the American College of Obstetricians and Gynecologists (ACOG), echoed that conclusion in a statement, writing that "not a single reputable study has successfully concluded that the use of acetaminophen in any trimester of pregnancy causes neurodevelopmental disorders in children."

https://www.snopes.com/news/2025/09/24/tylenol-autism-pregnancy-research/