Bryan Johnson· Author
My total bone mineral density is in the 99.87th centile for 30 year olds (test age min).
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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.
My total bone mineral density is in the 99.87th centile for 30 year olds (test age min).
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.
Would love a "what would change this verdict" RSS feed. Sign me up if it exists.
T scores vs 30 year old baseline July 28th 2023 - 2.9 - 99.81st centile Feb 27th 2024 - 3.0 - 99.87th centile
Aiming for superhuman joints to match my total bone mineral density which is in the top 99.8% for 30 year olds.