Bryan Johnson· Author
once the stem cells leave the lab they've got 2 hours of time and then they start to deteriorate very quickly
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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.
once the stem cells leave the lab they've got 2 hours of time and then they start to deteriorate very quickly
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Native comments, Twitter mentions, and Reddit threads about this claim — surfaced together so the conversation isn't fragmented across platforms.
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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