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Weekly · Sunday Morning

Five longevity claims.
Worth your time.
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

5 audits·1 verdict change·0 affiliate links·Every Sunday

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© 2026 Whalespan. Independent, evidence-graded longevity.

Will My Son’s Blood Make Me Younger? — Whalespan

Content›Video›Will My Son’s Blood Make Me …

Will My Son’s Blood Make Me Younger?

Bryan Johnson15m · 2023-05-22

Claims Made

20

Claims Supported

13

Support Rate

65%

Support rate

13 of 20 claims supported

13 supported7 partial / not

Claims from this content

9

✓Well SupportedBryan Johnson believes lifespan extension discoveries will occur within his potential natural lifespan, aided by AI.✓Well SupportedPlasma exchange between Bryan Johnson, his son, and his father was an effective experience, particularly for his father.✓Well SupportedBrian Johnson's supplement choices are based on his team's analysis of evidence, biomarker measurements, and ongoing data generation.◐Partially SupportedPlasma transfusions from younger donors have historically been used for rejuvenation.Well Supported

More from Bryan Johnson

Bryan Johnson's Blueprint Rapamycin Protocol

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AV

A. Volkovreader

4h

Bookmarking — the dossier-vs-overview split is the right call. Most of the time I want overview; sometimes I want receipts.

NP

N. Park

2d

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

✓

Sewing two mice together to share a circulatory system showed that the older mouse became younger.

◐Partially SupportedRegular transfusions of blood from a younger donor can significantly slow the aging process.

◐Partially SupportedThe blood filter used in the plasma exchange process was observed to be completely clean.

◐Partially SupportedTalage has been on the Blueprint protocol for two years with Bryan Johnson, and their blood work results are nearly indistinguishable.

◐Partially SupportedPlasma donation is beneficial for both the donor and the recipient.