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Weekly · Sunday Morning

Five longevity claims.
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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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Test Your Biological Age For $0 — Whalespan

Content›Video›Test Your Biological Age For…

Test Your Biological Age For $0

Bryan Johnson13m · 2025-01-10

Claims Made

22

Claims Supported

18

Support Rate

82%

Support rate

18 of 22 claims supported

18 supported4 partial / not

Claims from this content

16

✓Well SupportedBiological age, rather than chronological age, is the key factor for healthspan.◐Partially SupportedChronological age does not necessarily reflect biological age.✓Well SupportedMeasuring biological age allows individuals to track the effectiveness of interventions aimed at slowing or reversing aging.◐Partially SupportedA perfect score (10/10) on the sit-to-rise test indicates stability and no touch points, suggesting good basic strength.◐Partially Supported

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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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Performing over 16 continuous push-ups indicates excellent fitness for a female, suggesting biological youth.

◐Partially SupportedSix free at-home tests and one optional $20 test can serve as an entry point to baseline and track one's aging process.

◐Partially SupportedExceeding 19 inches on the sit-and-reach test indicates better than average flexibility for hamstrings and lower back.

◐Partially SupportedThe waist-to-height ratio is preferred over BMI for assessing body composition and visceral fat due to its accuracy.

◐Partially SupportedReaction time decline is more pronounced in women than in men and creates risk.

◐Partially SupportedThe eyes-closed one-leg stand test is a predictor of all-cause mortality for individuals over 41 years old.

◐Partially SupportedFlexibility in the hamstrings and lower back is important for injury prevention.

◐Partially SupportedFaster reaction time is important as one ages because reaction speed decreases.

◐Partially SupportedIndividuals can improve their biological age.

◐Partially SupportedBiological age tests are an entry point and should be supplemented with blood work and imaging for a comprehensive health assessment.

◐Partially SupportedGrip strength is a measure of physical capacity, with an average score of 62 lbs and an 'off the charts' score of 91 lbs.

◐Partially SupportedData science, including measurement and comparison, is crucial for understanding baseline health, comparing oneself to others, and tracking improvement.