TikTok Autism Misinformation Drew More Views Than Facts, Study Says

Pregnant viewers scrolling TikTok for answers about pain relief keep landing on videos claiming Tylenol causes autism. New research says the most-watched clips on the topic are also the least reliable. TikTok autism misinformation outperformed evidence-based videos after federal health officials claimed a link between acetaminophen use in pregnancy and autism, according to a Rutgers University analysis presented at the American Academy of Pediatrics 2026 National Conference & Exhibition in San Diego. The findings land on a real household decision: acetaminophen is one of the few pain and fever medicines commonly used during pregnancy, and the clips earning the most views were the ones getting the science wrong.

The study in numbers

Researchers led by Rutgers School of Medicine medical student Shivani Srivastava and pediatrician Kathryn Whitehill analyzed 53 TikTok videos posted between September 22, 2025 and November 2025, identified through search terms including "Tylenol autism," "acetaminophen autism," "paracetamol autism" and the #Tylenol hashtag. Just over half of the clips, 52.8%, contained information consistent with the scientific evidence, while 28.3% contained outright misinformation and 18.9% carried mixed or uncertain information. The misleading clips punched well above their weight: despite being a minority of the sample, they collected 52.4% of 28.1 million total views, and one misinformation video alone reached 10.3 million views, or 36.6% of all exposure in the study. Influencers, rather than medical professionals, produced 73.3% of the misinformation videos, while clips made by health professionals were consistently evidence-based. Nearly half of the misleading videos used conspiracy framing, at 46.7%, and 53.3% encouraged distrust of pharmaceutical companies, the researchers reported.

Why doctors are worried

The study grew out of clinic rooms. After watching pregnant patients question whether it was safe to take Tylenol during pregnancy, Srivastava and her colleagues wanted to see what those patients were being shown online. "We wanted to understand what information they were being exposed to online," Srivastava said, according to coverage of the conference. The pattern the team found is the one pediatricians dread: the most popular TikTok autism misinformation clips were also the ones framed to make viewers suspicious of the medical establishment. And the institutions best placed to push back were mostly quiet. Only about one-fifth of major health institutions responded to the false claims at all, a second abstract from the same conference found.

What the medical guidance actually says

The clinical consensus has not moved. The American College of Obstetricians and Gynecologists says more than two decades of research support acetaminophen as safe to use during pregnancy when taken in consultation with a physician, and calls claims tying the drug to autism and other neurodevelopmental disorders a growing form of misinformation, according to reporting from Drugs.com. A major data review published in January reached the same conclusion, finding no link between prenatal acetaminophen use and neurodevelopmental disorders in children. Meanwhile, real-world fallout was already visible: a study published in The Lancet in March found that acetaminophen prescriptions for pregnant patients treated in emergency rooms fell significantly after the federal announcements, as reported by Drugs.com. Because the Rutgers findings were presented at a medical meeting, they should be considered preliminary until they appear in a peer-reviewed journal.

What comes next

The researchers' takeaway is practical: medical institutions need to meet patients where they are. "Our findings reveal how important it is for medical institutions to be part of the conversations on social media by sharing accurate, engaging content that reaches patients where they are," Srivastava said, according to Medical Xpress. That absence is now part of the TikTok autism misinformation story itself, with researchers calling the institutional silence one of the reasons false claims keep winning the views race.

The episode also says something about the platform. Srivastava told Medical Xpress that TikTok's algorithm amplified low-quality, conspiracy-framed videos on a sensitive health topic, letting misleading clips spread far wider than evidence-based videos explaining the lack of causal evidence between prenatal acetaminophen exposure and autism. For viewers who turn to short video for health questions, the study is a reminder to check who is behind a claim: the TikTok autism misinformation clips that spread fastest were made by influencers, not by people with medical training. Checking a creator's credentials takes seconds; believing a wrong claim can shape a whole pregnancy.