Taking Tylenol During Pregnancy Has No Link To Autism, New Study Finds

Taking acetaminophen – known successful nan US by nan marque sanction Tylenol – during gestation has nary effect connected later autism diagnoses, according to a sweeping caller study from Denmark published Monday.

The Trump administration has targeted Tylenol usage successful gestation arsenic a awesome origin of autism successful children, which appears to person led to a driblet successful pregnant group taking nan symptom reliever.

Through Denmark’s robust nationalist healthcare system, researchers were capable to way much than 1.5 cardinal children ‌born betwixt 1997 and 2022 successful nan nationalist wellness registry, including 31,098 children who were exposed to Tylenol successful utero.

Autism was diagnosed successful 1.8% of children who were exposed to Tylenol and 3% of those who weren’t, according to nan study, which was published successful Jama Pediatrics. A akin 2024 study successful Sweden found a marginal nexus that vanished aft taking siblings into account, suggesting that autism is powerfully genetic, which has already been demonstrated successful different studies.

A US reappraisal of existing studies successful 2025 found a imaginable relationship, but it wasn’t clear whether confounders were astatine play. For instance, if pregnant autistic group return Tylenol much often than neurotypical pregnant group because of higher symptom levels.

Health officials announced successful September 2025 that nan US Food and Drug Administration (FDA) would initiate a explanation alteration for acetaminophen, informing of a imaginable nexus to autism. Trump cautioned respective times against taking nan symptom reliever during pregnancy.

“​​If you’re pregnant, don’t return Tylenol,” Trump said astatine a property convention astatine nan time. “Don’t return Tylenol. Don’t person your babe return Tylenol.” He said nan medicine is “not good” and taking Tylenol during gestation is associated pinch “a very accrued consequence of autism”.

Trump added that successful immoderate “medically necessary” cases, acetaminophen mightiness still beryllium recommended successful pregnancy. “That’s, for instance, successful cases of highly precocious fever that you consciousness you can’t reliable it out,” he said.

At nan aforesaid September property conference, officials announced that leucovorin, a B vitamin, could beryllium utilized to dainty autism. That declare was softly walked back earlier this year.

Tylenol is safe to return during gestation and tin play a cardinal domiciled successful relieving symptom and bringing down fevers. Yet aft nan September announcement, Tylenol usage among pregnant women successful emergency rooms dropped by 10%, according to a Lancet study published past month.