Overview

• President Trump is scheduled to appear at 4 p.m. with HHS Secretary Robert F. Kennedy Jr. for an announcement expected to link acetaminophen use in pregnancy to autism and to highlight low folate and the drug leucovorin.
• Kenvue, the maker of Tylenol, rejects any link and urges consultation with clinicians, as its shares fell about 6% Monday and 17% this month on reports of the coming warning.
• Clinical societies including ACOG say prudent acetaminophen use in pregnancy remains appropriate, citing risks from untreated fever and pain.
• Research remains mixed, with a 2024 Swedish sibling-controlled study finding no causal link while a recent meta-analysis reported associations but cautioned it cannot prove causation.
• Politico reported that a promised HHS review is not yet publicly available, while NIH is expected this month to name awardees for a $50 million effort to study autism causes.