Heidi Overton affirms MMR vaccine and mifepristone safety at Senate hearing

Heidi Overton, President Donald Trump’s nominee for FDA commissioner, told a Senate health subcommittee on Thursday that the MMR vaccine and the abortion pill mifepristone are safe, and that Tylenol does not cause autism. Her comments came during a 90‑minute confirmation hearing in Washington, where she faced questions from both parties about the agency’s role in public‑health controversies.

The remarks matter because the two drugs have become flashpoints in the culture wars. The MMR vaccine has been targeted by anti‑vaccine activists who claim it causes autism, despite dozens of studies disproving the link. Mifepristone, approved in 2000, has faced renewed attacks from anti‑abortion lawmakers seeking to restrict its use. The myth that acetaminophen (Tylenol) leads to autism has also persisted in online forums, prompting calls for stricter labeling. Overton’s defense of these products comes after months of hearings where senators pressed the nominee on how the FDA will handle misinformation and political pressure.

Overton cited the Centers for Disease Control and Prevention’s 2023 data showing a 99.9 % safety rate for the MMR vaccine, and referenced the FDA’s 2022 safety review that found no increased risk of serious adverse events from mifepristone when used as directed. She also pointed to large epidemiological studies that have found no causal link between acetaminophen use in children and autism spectrum disorders. Democratic senator Maria Cantwell praised the evidence but warned that the FDA must remain vigilant against “politically motivated attacks” on science. Republican senator John Kennedy thanked Overton for “standing up for proven, life‑saving medicines,” while a handful of anti‑vaccine activists shouted from the gallery.

The hearing ends with a scheduled floor vote on Overton’s confirmation next week. If confirmed, she would inherit an agency under scrutiny for its handling of COVID‑19 vaccines, nicotine‑reduction rules, and the pending rollout of new gene‑therapy products. Her stance on the safety of the MMR vaccine, mifepristone, and Tylenol signals a willingness to defend established science against politicized claims. The Senate’s decision will shape the FDA’s ability to navigate future health crises and could set a tone for how the agency confronts misinformation in the coming years.