A major study finds no link between prenatal acetaminophen and autism, ADHD, or intellectual disability in children.

There is no proof that prenatal acetaminophen (Tylenol) use raises the risk of autism, ADHD, or intellectual disability in children, according to a seminal study published in The Lancet Obstetrics, Gynecology & Women's Health that examined 43 research papers, including a Swedish cohort of 2.4 million births. The results, which are backed by significant health organizations, disprove assertions made by former President Donald Trump and Health Secretary Robert F. Kennedy Jr. that were based on false information and lacked scientific support. Experts advise expectant mothers to follow evidence-based recommendations rather than political statements, stressing that untreated fever and pain during pregnancy carry higher risks to fetal development than acetaminophen when taken as prescribed.