Overview

• President Trump plans an Oval Office announcement Monday with HHS Secretary Robert F. Kennedy Jr. and CMS chief Mehmet Oz to link prenatal acetaminophen exposure to increased autism risk.
• The administration is expected to advise pregnant patients to avoid acetaminophen unless treating high fevers and to spotlight leucovorin as a potential therapy for autism symptoms.
• Kenvue, maker of Tylenol, rejects any causal link and warns restricting acetaminophen could endanger pregnant patients by limiting safe options for pain and fever.
• Researchers and professional societies cite mixed observational evidence and point to large analyses, including a 2024 Swedish sibling study, that found no causal association.
• No comprehensive, peer‑reviewed HHS analysis has been released ahead of the event, and reports indicate internal disagreement over issuing a public warning.