Audit a URL →

Sign in Sign up free

Loading…

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

Joining 1,247 readers — founders, MDs, and longevity-obsessed people who fact-check their own health decisions.

Browse

Decisions Claims Content Creators

Product

Audit a URL Sunday roundup API (soon)Pricing

About

FAQ Methodology Editorial Standards Corrections Press & brand RSS feed

Legal

Terms of Service Privacy Policy DMCA

Finally, something serious in this space.
Because we actually read the papers.

© 2026 Whalespan. Independent, evidence-graded longevity.

What's Your Muscle Loss Trajectory? — Whalespan

Content›Video›What's Your Muscle Loss Traj…

What's Your Muscle Loss Trajectory?

Peter Attia2m · 2025-05-22

Claims Made

7

Claims Supported

5

Support Rate

71%

Support rate

5 of 7 claims supported

5 supported2 partial / not

Claims from this content

7

✓Well SupportedAging is associated with a decline in muscle power that is disproportionately greater than the loss of muscle mass or strength.✓Well SupportedPopulation-based averages of muscle decline with age mask individual variability, which often includes slow decline punctuated by rapid periods of loss due to inactivity.✓Well SupportedTraining for the 'centenarian athlete' phenotype requires prioritizing injury prevention over peak performance.✓Well SupportedAvoiding inactivity is crucial to prevent irreversible muscle mass loss.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

Discussion

Native comments, Twitter mentions, and Reddit threads about this content — surfaced together so the conversation isn't fragmented across platforms.

M

Share your read of this content…

Posting publicly as you · linked to your social profiles

Sort by:

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.

◐

Muscle loss in the elderly typically appears as a smooth, continuous decline on population-level graphs, often starting in the 70s.

◐Partially SupportedAvoiding inactivity and time without training is key to mitigating age-related muscle decline.

◐Partially SupportedMuscle mass and function peak around age 30.