Pregnant women are being urged to take paracetamol only with medical advice. Harvard scientists warn it may increase the risk of autism and ADHD in children.

Paracetamol, also called acetaminophen or Tylenol, is often used for pain, headaches, and fever during pregnancy. But new research from Harvard and Mount Sinai reviewed over 100,000 cases and found the “strongest evidence so far” linking the drug to developmental issues.

Dr. Diddier Prada explained, “Higher-quality studies show a stronger link between prenatal use and autism or ADHD.” He added, “Even a small risk could have major public health effects.”

Experts stress that mothers should not suddenly stop taking medication. Untreated pain or fever can also harm the baby. Doctors recommend the lowest dose for the shortest time and suggest discussing non-drug options when possible.

Paracetamol is still considered the NHS’s “first choice” pain relief in pregnancy, but only in moderation. With autism and ADHD diagnoses rising worldwide, these findings highlight the need for caution.

👉 What do you think—should guidelines on paracetamol use in pregnancy change?