Bryan Johnson· Author
This study shows oral bacteria health declines with age. Older adults had less oral microbial diversity and 9% higher baseline blood pressure (MAP 95 vs. 87 mmHg).
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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.
This study shows oral bacteria health declines with age. Older adults had less oral microbial diversity and 9% higher baseline blood pressure (MAP 95 vs. 87 mmHg).
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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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