HEALTH

What Do We Really Know About Tylenol and Autism?

USATue Sep 09 2025

A Growing Concern

Autism rates in the US have been climbing, with one in 31 children now affected. This rise has sparked a hunt for possible causes, from genes to the environment. Recently, attention has turned to acetaminophen, the active ingredient in Tylenol, and its potential role in autism development.

Pending Report

A report is expected soon from the Department of Health and Human Services. It is said to explore the connection between taking acetaminophen during pregnancy and autism. However, the details are still under wraps, and any claims about its findings are just guesses at this point.

What Does the Science Say?

Studies have given mixed results:

  • A large study in Sweden involving nearly 2.5 million kids found no direct link between acetaminophen use during pregnancy and autism or ADHD.
  • Another review of 46 studies suggested a possible increased risk. Researchers think acetaminophen might cause:
  • Oxidative stress
  • Hormonal disruption
  • Genetic alterations They emphasize that more research is needed to be sure.

Expert Opinions

Some experts believe any link might be because of the conditions that led the mother to take the medication in the first place.

Official Stances

  • The American College of Obstetricians and Gynecologists says acetaminophen is safe for pregnant women, but they advise checking with a doctor before taking any medicine.
  • The company that makes Tylenol, Kenvue, also stands by its product, saying there’s no proven link between acetaminophen use during pregnancy and autism.

Market Impact

Despite the company’s stance, Kenvue’s shares took a hit after the news broke, dropping more than 14%.

questions

    What are the most recent studies that contradict the potential link between acetaminophen and autism?
    How do healthcare professionals generally advise pregnant women regarding the use of acetaminophen?
    What are the ethical considerations in advising pregnant women about the use of acetaminophen given the current conflicting research?

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