New Study Confirms Tylenol Safe During Pregnancy, Dismisses Autism Claims

A recent comprehensive review of existing studies has found no evidence that taking Tylenol, known as acetaminophen in some regions, during pregnancy increases the risk of autism, attention deficit hyperactivity disorder (ADHD), or intellectual disabilities in children. This research adds to the growing body of evidence countering claims made by former President Donald Trump, who previously advised pregnant women against using the widely used painkiller.

The review, published in The Lancet Obstetrics, Gynecology & Women’s Health on March 15, 2024, analyzed data from 43 studies. Among these, the most rigorous studies, particularly those comparing siblings, indicated that using Tylenol during pregnancy does not contribute to autism or related disorders. Lead author and fetal medicine specialist, Dr. Asma Khalil, emphasized the safety of the medication, stating, “It remains the first line of treatment that we would recommend if the pregnant woman has pain or fever.”

While some studies have explored potential links between Tylenol use and autism risk, the majority have found no such connection. A review published last year in BMJ concluded that current evidence does not clearly establish a relationship between acetaminophen use during pregnancy and autism or ADHD in offspring. Similarly, an analysis appearing in the Journal of the American Medical Association also found no correlation between the drug and increased risk of these conditions.

Despite the research, the Trump administration had previously highlighted studies that suggested an association between Tylenol exposure during pregnancy and neurodevelopmental disorders. One of the cited papers from BMC Environmental Health reviewed 46 studies and claimed to find evidence supporting such links. Critics have pointed out that the studies referenced in that review often included small sample sizes and were prone to bias.

Dr. Khalil noted that the studies showing small associations between acetaminophen and autism might be influenced by confounding factors. For instance, pregnant women often take Tylenol to treat fevers, which themselves could elevate autism risk. Additionally, “recall bias” may occur when mothers of autistic children inaccurately remember their medication use during pregnancy.

Genetics remain the primary risk factor for autism, with other contributing factors including paternal age, preterm birth, and maternal health issues. In a commentary accompanying the recent review, researchers from London School of Hygiene and Tropical Medicine and Children’s Hospital Colorado cautioned against discouraging Tylenol use during pregnancy, warning that inadequate pain or fever management could pose risks to both mothers and babies. They highlighted that untreated fever during pregnancy can have serious implications for fetal survival and neurodevelopment.

This new review reinforces the importance of balanced information regarding the use of Tylenol during pregnancy. The evidence suggests that while caution is warranted, the medication remains a safe and effective option for managing pain and fever, with no established links to autism or ADHD. As research continues to evolve, it is vital for expectant mothers to consult healthcare professionals for guidance on any medications they may need.