Bryan Johnson· Author
The point around large individual differences stands, hence why I track baseline and trends over longer periods (maximum HR etc) to use as biological age estimates and longevity markers.
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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.
The point around large individual differences stands, hence why I track baseline and trends over longer periods (maximum HR etc) to use as biological age estimates and longevity markers.
Every Sunday: the week’s new conflicts and verdict changes — and nothing else.
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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