David Sinclair· PhD
And the other thing that's happened besides having more mitochondria is that you've built more blood vessels in your body, and so your oxygen gets transported to the tissues.
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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.
And the other thing that's happened besides having more mitochondria is that you've built more blood vessels in your body, and so your oxygen gets transported to the tissues.
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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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Conversely, if you sit around all day, you won't build new blood vessels, you'll actually have fewer and fewer and your muscle and your brain starts to get starved of