Overview

• President Trump urged pregnant women to avoid Tylenol and tied prenatal use to autism, triggering rapid pushback from medical organizations in multiple countries.
• The World Health Organization and the European Medicines Agency stated there is no evidence that paracetamol in pregnancy causes autism, and WHO reiterated that vaccines do not cause autism.
• Argentina’s pediatric society issued a formal document concluding there is no solid evidence linking paracetamol to autism and that the medicine remains safe in pregnancy when used properly, a position echoed by Spain’s pediatric association.
• Evidence remains mixed across observational studies, but a large 2024 Swedish JAMA cohort using sibling comparisons found no increased risk after accounting for shared genetic and environmental factors.
• Clinicians note that untreated fever in pregnancy carries known risks and advise the lowest effective dose for the shortest time, while media report the FDA plans to review acetaminophen safety.