Paul Saladino· MD
further evidence for around 50 slightly lower than 50 nanograms per ml being an optimal level of vitamin d for humans comes from the suppression of parathyroid hormone in human physiology
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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.
further evidence for around 50 slightly lower than 50 nanograms per ml being an optimal level of vitamin d for humans comes from the suppression of parathyroid hormone in human physiology
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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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