President Donald Trump has once again drawn sharp criticism after issuing a series of medical claims—shared on his Truth Social platform—insisting that pregnant women avoid Tylenol (acetaminophen) unless absolutely necessary, and that young children should not be given it “for virtually any reason.”
He also questioned standard vaccine schedules, suggesting that childhood immunizations be spaced out or separated into multiple visits. These assertions contradict longstanding guidance from the U.S. Food and Drug Administration (FDA) and the Centers for Disease Control and Prevention (CDC)—and have drawn rebukes from health experts around the world.
Trump’s comments echo earlier remarks made at a White House press event, where he claimed the FDA had warned doctors not to prescribe acetaminophen to pregnant women due to a supposed link to autism.
In reality, the FDA’s existing guidance allows for acetaminophen use during pregnancy in select circumstances—particularly when fever or pain poses a known risk to maternal or fetal health. The agency has now initiated a process to update acetaminophen’s labeling to reflect epidemiological findings that suggest — but do not establish — an association between prenatal use and neurodevelopmental conditions such as autism and ADHD.
While some observational studies have reported weak associations between prenatal acetaminophen exposure and neurodevelopmental disorders, these findings are far from conclusive. A high-quality sibling-control study published in JAMA found no link between maternal use of acetaminophen and increased risk of autism, ADHD, or intellectual disability once genetic and familial factors were accounted for.
Meanwhile, a recent systematic review led by Mount Sinai analyzed 46 prior studies and reported that more rigorous analyses were likelier to show associations—but those findings stop short of proving causation.
Leading obstetrics organizations have reaffirmed acetaminophen’s role as a generally safe option for managing pain and fever during pregnancy when taken at the lowest effective dose and for the shortest necessary duration.
The Society for Maternal-Fetal Medicine (SMFM) responded directly to the Trump administration’s announcement, emphasizing that acetaminophen remains appropriate for use under medical supervision in pregnancy.
On the subject of vaccines, Trump went further—urging that the MMR (measles, mumps, rubella) vaccine be broken into three separate shots rather than combined, advising that the varicella (chickenpox) vaccine be administered separately, and recommending the hepatitis B vaccine not be given soon after birth but delayed to age 12 or later. These ideas sharply diverge from CDC recommendations, which emphasize early protection and combined formulations to reduce missed doses.
Public health officials and global health bodies have been swift to counter Trump’s narrative. The World Health Organization issued a statement reaffirming that, to date, no conclusive scientific evidence links acetaminophen use in pregnancy to autism.
In the United Kingdom, the health secretary publicly rejected Trump’s claims, declaring that pregnant women should rely on medical professionals—not political figures—for medical advice.
In the United States, professional societies, researchers, and autism advocacy groups expressed concern that Trump’s statements risk sowing confusion, feeding vaccine hesitancy, and stigmatizing neurodivergent individuals.
The backlash has been felt in markets, too. Tylenol’s parent company, Kenvue, saw its share price drop in the wake of the administration’s claims, as investors reacted to potential regulatory and reputational fallout.
Meanwhile, the White House has also floated promoting leucovorin (a folate derivative) as a potential treatment for autism symptoms—a proposal viewed skeptically by many in the scientific community, given limited and preliminary evidence supporting its use.
From a public-health perspective, the risks of acting on unverified medical advice are significant. Delaying or altering vaccine schedules leaves infants vulnerable to preventable diseases during critical windows of vulnerability.
Likewise, discouraging appropriate use of acetaminophen may lead pregnant women to endure untreated fever or pain—or turn to alternatives (like NSAIDs) that may carry higher risks in pregnancy.
In sum, Trump’s recent pronouncements on acetaminophen and vaccines represent a stark departure from the consensus of scientific and medical authorities. His framing of medical advice, especially around autism, reinvigorates long-debunked tropes about vaccines and painkillers—tropes that experts warn could undermine pu
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