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Eric Feigl-Ding

@DrEricDing · view on X ↗

Health & economic warnings. Health policy, epidemiology & finance data. Faculty/Chair @NECSI. Fmr @Harvard @JohnsHopkins. (backup @EricDingEpi)

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Sep 22, 2025
⚠️TYLENOL & AUTISM—RFK Jr and Trump are wrong—the largest & best study in the world in 2.5 MILLION KIDS—found no increased autism risk with acetaminophen (aka paracetamol, Tylenol) use by the mother d...
SummaryLarge epidemiological studies from Sweden and Norway involving 2.5 million children found no association between acetaminophen (Tylenol) use during pregnancy and autism risk when controlling for family factors, contradicting claims by RFK Jr and Trump. The apparent 5% increased risk in unadjusted analyses disappeared when sibling controls were used, indicating the association was due to confounding rather than a true causal effect.14 tweets2 min read