Bryan Johnson· Author
90% of visible skin aging is from the sun.
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The evidence is convergent. Multiple independent sources reach the same conclusion, the underlying mechanism is well-characterized, and even the field's most cautious voices treat it as worth doing.
90% of visible skin aging is from the sun.
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.
90% of visible skin age is from the sun.
~80% of preventable skin aging comes from sun exposure.
Hey friends, did you know that 90% of visible skin aging is caused by everyday sun?
90% of physical skin aging is from the sun, so this is a UV umbrella protecting me