Peter Attia· MD
National guidelines for sperm donation, 40 is considered older paternal age. 50 for sure.
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The headline is broadly defensible, but the qualifications matter. Effect sizes vary by population, the strongest claims rest on shorter trials, and credible voices push back on how it's typically framed.
National guidelines for sperm donation, 40 is considered older paternal age. 50 for sure.
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Bookmarking — the dossier-vs-overview split is the right call. Most of the time I want overview; sometimes I want receipts.
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