U.S. President Donald Trump on Monday linked autism and the use of Tylenol's active ingredient during pregnancy, a claim for which researchers have not found any conclusive evidence.

The president said the Federal Drug Administration (FDA) will start notifying physicians to tell pregnant patients that using acetaminophen, the ingredient in Tylenol, can be associated with "a very increased risk of autism."

The Trump administration is widely expected to make a disputed link between autism and the use of Tylenol in pregnancy — one that is being closely watched by doctors and scientists.

Speaking to reporters on Sunday night, U.S. President Donald Trump teased a Monday announcement, saying "I think we found an answer to autism."

A White House event is scheduled for 4 p.m. ET.

U.S. Health

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