Tylenol in pregnancy not linked to autism danish study confirms

DENMARK – A major nationwide study from Denmark has found no evidence that taking Tylenol (acetaminophen) during pregnancy increases the risk of autism in children. The findings help clarify years of public concern and mixed claims about the safety of the common pain reliever during pregnancy.

Researchers analyzed health records from more than 1.5 million children born between 1997 and 2022. Among them, over 31,000 children were exposed to acetaminophen before birth. According to the study, autism was diagnosed in 1.8% of exposed children compared with 3% of unexposed children, showing no increased risk linked to the medication.

What the study found

• No association between prenatal Tylenol use and autism spectrum disorder.
• Results remained consistent even after adjusting for timing, dosage, and medical reasons for using the medication.
• The study supports similar findings from Sweden in 2024, which also reported no link between acetaminophen use in pregnancy and autism.

Why this matters

Concerns about Tylenol and autism grew in recent years after earlier studies suggested a possible connection. Those studies, however, could not prove cause and effect. The new Danish research, based on one of the world’s largest population health databases, provides stronger evidence that acetaminophen remains safe when used appropriately during pregnancy.

Expert guidance

Medical experts continue to advise pregnant individuals to:

• Use acetaminophen only when needed,
• Take the lowest effective dose,
• And avoid prolonged or unnecessary use.

Doctors also note that untreated fever or severe pain during pregnancy can pose risks, making safe pain‑relief options important.

Conclusion

The new Danish findings offer reassurance to millions of families worldwide. Based on current evidence, Tylenol remains one of the safest pain‑relief options during pregnancy, when used responsibly and under medical guidance.