In another large study, scientists have found no correlation between Tylenol use during pregnancy and autism in children. This latest finding refutes claims made by President Trump and anti-vaccine advocate Robert F. Kennedy Jr., who suggested a link without clear evidence.

The new research, published in JAMA Internal Medicine, analyzed the electronic health records of over 700,000 mother-child pairs from Hong Kong between 2001 and 2023. Of these, approximately 43% had been exposed to acetaminophen (Tylenol) in utero.

Despite medical organizations stressing that acetaminophen is a safe pain and fever reliever during pregnancy, Trump’s warnings were impactful enough for Texas to sue the Tylenol manufacturer over the alleged connection. A study published in The Lancet in March found that use of acetaminophen in pregnant patients in emergency departments dropped by 10% after Trump’s press conference.

Medical experts continue to advise against untreated fever during pregnancy, as it is linked with an increased risk of autism and other conditions such as miscarriage, birth defects, and premature birth. This study adds another layer of scrutiny to the ongoing debate over Tylenol use during pregnancy, but for now, the evidence points to its safety.