Photo Credit: Washington Post
On Monday, US President Donald Trump reignited debates surrounding vaccines and pregnancy health by asserting that autism is linked to childhood vaccinations and the use of Tylenol during pregnancy, despite a lack of scientific evidence supporting either claim.
During an unusual White House press conference, Trump advised pregnant women to avoid taking Tylenol and cautioned parents against vaccinating children too early or administering multiple shots simultaneously. “Don’t take Tylenol. Don’t take it,” he told reporters, describing vaccines as “the largest pile of stuff you’ve ever seen in your life.”
He acknowledged that he is not a medical professional, and his statements contradicted decades of scientific research and the consensus among health authorities, which regard acetaminophen (the active ingredient in Tylenol) as safe for use during pregnancy.
Standing alongside Health Secretary Robert F. Kennedy Jr., a well-known vaccine critic, Trump announced that his administration would review vaccine safety and expressed support for leucovorin, a derivative of folic acid, as a treatment for autism symptoms.
The medical community quickly rejected the President’s claims. Major health organizations—such as the American Academy of Pediatrics, the American College of Obstetricians and Gynecologists, and autism advocacy groups—stipulated that existing data do not link Tylenol to autism, nor is leucovorin a proven cure. The Coalition of Autism Scientists stated, “These claims only create fear and false hope.”
Tylenol’s manufacturer, Kenvue, also dismissed the comments, warning that misinformation could discourage pregnant women from using safe treatments. The company’s shares initially dropped over 7% before partially recovering in after-hours trading.
Policy and regulatory agencies responded accordingly. The Food and Drug Administration (FDA) announced plans to request updated labeling for Tylenol and generic acetaminophen, noting that prenatal exposure may be “associated” with neurological conditions, although no causal relationship has been established. The FDA also issued guidance urging caution in prescribing these medications to pregnant women.
Furthermore, officials indicated they are exploring options to expand Medicaid coverage for leucovorin in autism care, despite limited evidence supporting its effectiveness—initial studies show only modest benefits in certain metabolic conditions, and larger clinical trials are necessary.
The controversy echoes past health debates, including President Trump’s earlier promotion of unproven remedies during the COVID-19 pandemic, such as disinfectant injections. Numerous independent studies have reaffirmed that vaccines are safe and have played a crucial role in eradicating diseases like polio and measles.
A recent Reuters/Ipsos poll found that only one in four Americans believes that the Trump administration’s current vaccine recommendations are grounded in scientific evidence.