A file news photograph of a medical thermometer in a hospital for a story about fever in pregnancy after Trump announced pregnant people should not take tylenol
Jenny Kane/AP

Elizabeth Cooney is a cardiovascular disease reporter at STAT, covering heart, stroke, and metabolic conditions. You can reach Liz on Signal at LizC.22.

Theresa Gaffney is the lead Morning Rounds writer and reports on health care, new research, and public policy, with a particular interest in mental health, gender-affirming care, and LGBTQ+ patient communities. You can reach Theresa on Signal at theresagaff.97.

Annalisa (Nalis) Merelli is a contributing writer at STAT focused on boys’ and men’s health.

Federal health officials are telling Americans no, they shouldn’t take Tylenol during pregnancy for fear of autism and yes, they should try a drug used in cancer care to treat children who have developed autism. The medical world disagrees. 

“We were actually pretty alarmed by some of the output that was coming from the administration,” Marketa Wills, CEO and medical director of the American Psychiatric Association, said in an interview. At a remarkable White House briefing on Monday, President Trump and his top health and science officials said Tylenol use in pregnancy caused some cases of autism in children and said leucovorin, a form of vitamin B9, could treat the condition.

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The event has drawn a flood of pushback from medical societies, autism organizations, and pediatric experts through official statements, interviews, and social media. Much more research is needed on the claims about Tylenol and leucovorin in particular, experts emphasized.

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