Bryan Johnson· Author
also diet has changed quite a bit. There's uh much greater obesity and insulin resistance causing inflammation. That inflammation then leads to basically a reduction in sperm production.
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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.
also diet has changed quite a bit. There's uh much greater obesity and insulin resistance causing inflammation. That inflammation then leads to basically a reduction in sperm production.
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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.
Would love a "what would change this verdict" RSS feed. Sign me up if it exists.