Health and Human Services Secretary Robert F. Kennedy Jr. speaks as President Donald Trump listens in the Roosevelt Room of the White House in Washington on September 22, 2025. MARK SCHIEFELBEIN / AP

US President Donald Trump on Monday, September 22, urged pregnant people not to take Tylenol over an unproven link to autism and called for major changes to the standard vaccines given to babies.

The announcement comes as the White House has vowed to revolutionize health in the United States, while experts across medicine and science voice broad concern over the administration's initiatives. Medical professionals have long cited acetaminophen as among the safest painkillers to take during pregnancy, especially as fever and pain can also pose dangers to both the mother and the developing fetus.

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