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Weekly · Sunday Morning

Five longevity claims.
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Every Sunday.

Last Sunday

Rapamycin extends mouse lifespan 9–14%
NAD+ precursors reverse aging in humans
Blue-light glasses improve sleep quality
Walking 10 min after meals blunts glucose
Verdict change — caffeine half-life downgraded

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90% of visible skin aging is caused by everyday sun — Whalespan

Content›Video›90% of visible skin aging is…

90% of visible skin aging is caused by everyday sun

Bryan Johnson1m · 2025-09-22

Claims Made

6

Claims Supported

6

Support Rate

100%

Support rate

6 of 6 claims supported

6 supported0 partial / not

Claims from this content

6

✓Well SupportedBryan Johnson limits sun exposure to early mornings or evenings when UV index is low, and stays out of the sun otherwise, using sunscreen when exposed.✓Well SupportedApproximately 80% of preventable skin aging is caused by sun exposure.✓Well SupportedExposure to morning and evening sunlight is beneficial but less intense than midday sun.◐Partially SupportedThe UV index should be checked daily to determine safe sun exposure times.◐Partially Supported

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Bryan Johnson's Blueprint Rapamycin Protocol

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A. Volkovreader

4h

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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2d

Would love a "what would change this verdict" RSS feed. Sign me up if it exists.

During high UV index periods, protection such as an umbrella, sunscreen, or hat should be used to minimize skin damage.

◐Partially SupportedSun exposure should be managed to obtain benefits while minimizing damaging UV radiation.