The White House announcement linking Tylenol to autism and promoting leucovorin as a treatment is premature and dangerous. The most rigorous studies to date don’t show a causal link between acetaminophen and autism, and leucovorin isn’t yet a proven therapy. Pregnant people and families deserve guidance grounded in science, not politics. And public health depends on trust. Unfortunately, that trust is broken when leaders trade evidence for soundbites.

As a physician and public health leader, I’ve spent decades working across the globe on the frontlines of epidemics. From HIV in sub-Saharan Africa to Covid-19 in New York City, I‘ve witnessed firsthand the consequences when political expedience substitutes for scientific evidence. The costs are measured not just in confusion, but in lives l

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