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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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Longevity Science vs. Hype | Brian Kennedy, Ph.D. — Whalespan

Content›Video›Longevity Science vs. Hype |…

Longevity Science vs. Hype | Brian Kennedy, Ph.D.

Peter Attia8m · 2025-07-25

Claims Made

13

Claims Supported

3

Support Rate

23%

Support rate

3 of 13 claims supported

3 supported10 partial / not

Claims from this content

8

◐Partially SupportedPeter Attia prescribes rapamycin to fewer than 10% of his patients due to the need for them to understand the risks, probabilities, and uncertainties involved.✕Not SupportedIndividuals pursuing unproven longevity treatments obtained outside the US should proceed with extreme caution due to unknown long-term safety.✕Not SupportedGene therapy and follistatin gene therapy are not well-proven treatments.◐Partially SupportedClinical studies are needed to address the safety concerns of growth hormone, particularly regarding long-term cancer susceptibility.Partially Supported

More from Peter Attia

Peter Attia on Zone 2 Cardio

Peter Attia on Rapamycin (with Matt Kaeberlein)

Attia walks back the clinic protocol: too aggressive for healthy adults

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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.

◐

Navigating the landscape of longevity hacks requires heuristics and careful discernment due to the difficulty in distinguishing scientifically validated approaches from unsubstantiated claims.

✕Not SupportedGene therapy and follistatin treatments are not well-proven and should not be undertaken.

◐Partially SupportedStem cell therapy safety concerns are often related to practitioner competence and adherence to protocols.

?Limited ResearchIntravenously administered mesenchymal stem cells may be safe for aging but their efficacy is unknown; they likely work for repairing soft tissue damage when injected directly.