KFF’s latest Tracking Poll on Health Information and Trust, fielded a day after the Trump administration warned that taking Tylenol during pregnancy can cause autism in children despite no evidence of a causal relationship, finds that three-quarters (77%) of the public report having heard this claim, and many are unsure whether it is true. Overall, just 4% of adults say it is “definitely true” that taking Tylenol during pregnancy increases the risk of the child developing autism, while a much larger share (35%) say the claim is “definitely false.” Most adults – including majorities across many demographics – express uncertainty, saying the unproven claim is either “probably true” or “probably false.” Belief in this claim is closely tied to partisanship, with most Republicans, including over half of Republican women, saying it is either “probably” or “definitely true.”

https://www.kff.org/public-opinion/kff-tracking-poll-on-health-information-and-trust-tylenol-autism-link-and-vaccine-policies/