In the wake of a highly hyped, late afternoon news conference at the White House where President Donald Trump linked autism spectrum disorder to a popular pain relief drug, scientists and researchers say there is no new evidence linking the two.

Speaking from the White House, Trump said women should not take acetaminophen, also known by the brand name Tylenol, “during the entire pregnancy.” He said the Food and Drug Administration would begin notifying doctors that the use of acetaminophen “can be associated” with an increased risk of autism, but did not immediately provide any medical evidence for the FDA's new recommendation.

Trump also raised unfounded concerns about vaccines contributing to rising rates of autism, which affects 1 in 31 U.S. children today, according to the CDC.

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