A new large-scale study published in The Lancet found no evidence that paracetamol use during pregnancy increases the risk of autism, ADHD or intellectual disability in children.[1][2][3] Researchers analyzed 43 studies with data from hundreds of thousands of participants from different parts of the world, including only those with well-documented drug use and verified medical records.[1][4] The study included more than 300,000 pregnancy records for autism, more than 400,000 for ADHD, and more than 500,000 for intellectual disability.[4] Lead author Asma Khalil, professor of perinatal medicine at St George's University Hospital, London, said: "The findings were consistent - paracetamol did not increase the risk."[1][2] The study used sibling comparisons to rule out genetic factors.[3][4] The claim about the risk of autism was linked to the drug in September 2025 by US President Donald Trump.[1][2][3] The results support existing recommendations on the safety of paracetamol in pregnancy when used appropriately.[3]