U.S. Health Secretary Robert F. Kennedy Jr. plans to announce that autism is linked to the use of Tylenol during pregnancy in a report expected to be released this month, The Wall Street Journal reported today.
The U.S. Department of Health and Human Services (HHS) will also likely suggest that low levels of the vitamin folate also contribute to autism. The report will propose that a form of folate called folic acid, or leucovorin, can be used to treat symptoms of the disorder, according to the WSJ.
Acetaminophen, the ingredient found in hundreds of prescription and over-the-counter medicines — including Tylenol products — is routinely recommended for fever reduction and the relief of mild to moderate pain. Pregnant women commonly take it.
The drug has long been linked to liver toxicity, and several studies over the last decade — including one published last month by researchers at Harvard Medical School — have found that children exposed to the drug during pregnancy may be more likely to develop neurodevelopmental disorders, including autism and attention-deficit/hyperactivity disorder or ADHD.
Shares of Tylenol, made by McNeil Consumer Healthcare, a division of Kenvue, declined nearly 11% Friday after the WSJ published its report.
“Nothing is more important to us than the health and safety of the people who use our products,” a Kenvue spokeswoman told the WSJ. “We have continuously evaluated the science and continue to believe there is no causal link between acetaminophen use during pregnancy and autism.”
The American College of Obstetricians and Gynecologists (ACOG) says Tylenol is safe to use in pregnancy. In 2021, as more evidence of the link was emerging, the organization published a statement opposing a consensus statement supported by a group of 91 scientists in the journal Nature Reviews Endocrinology. The scientists said that a growing body of research suggests that prenatal exposure to the drug may alter fetal development and increase the risks of neurodevelopmental, reproductive and urogenital disorders.
“ACOG and obstetrician-gynecologists across the country have always identified acetaminophen as one of the only safe pain relievers for pregnant individuals during pregnancy,” the pharmaceutical industry-sponsored medical organization insisted.
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