U.S. appeals court revives 500 Tylenol-autism lawsuits: Ireland challenges detentions over legal aid dispute

U.S. courts on Monday addressed several major lawsuits, including the revival of more than 500 cases linking Tylenol to autism and the overturning of a settlement with facial recognition company Clearview AI. In Ireland, seven people challenged their detention due to a dispute over legal aid payments.
In the Tylenol case, a U.S. appeals court revived more than 500 private lawsuits against Kenvue, the manufacturer of Tylenol, reversing a lower court's decision to dismiss the cases over a lack of scientific evidence.
The lawsuits argue that using Tylenol during pregnancy can lead to autism and ADHD in children. The U.S. Court of Appeals ruled that U.S. District Judge Denise Cote in Manhattan was wrong to exclude expert testimony from three doctors.
One of the expert witnesses is Andrea Baccarelli, the dean of Harvard University's School of Public Health. Baccarelli submitted a report stating that exposure to acetaminophen during pregnancy may increase the likelihood of neurodevelopmental disorders in children.
However, Baccarelli has said that further research is needed to confirm the association and determine causality. The appeals court judges, all Democratic appointees, stressed that they were not deciding whether acetaminophen causes autism or ADHD.
The decision comes less than a year after President Donald Trump urged pregnant women not to take Tylenol due to its alleged link to autism. Scientists have said this claim is based on "no evidence whatsoever."
Baccarelli had consulted with Trump’s health officials, including Health Secretary Robert F. Kennedy Jr., ahead of the president’s announcement in September 2025. The lawsuits were initially dismissed in December 2024 by Judge Cote, who criticized the methodology of the plaintiffs' expert witnesses.
In another case, a U.S. appeals court overturned a settlement with Clearview AI, an American facial recognition company.
In Ireland, seven people accused of offenses who were left without legal representation due to a dispute over the new legal aid payment model challenged the legality of their imprisonment in the High Court. Three of the seven accused were granted bail on Monday.
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