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.

Peter receives a shoulder exam from orthopedic surgeon, Alton Barron, M.D. — Whalespan

Content›Video›Peter receives a shoulder ex…

Peter receives a shoulder exam from orthopedic surgeon, Alton Barron, M.D.

Peter Attia11m · 2022-11-28

Claims Made

34

Claims Supported

34

Support Rate

100%

Support rate

34 of 34 claims supported

34 supported0 partial / not

Claims from this content

27

✓Well SupportedThe subscapularis muscle can be isolated and tested by having the patient push their elbow outward against resistance while their hands are on their abdomen.✓Well SupportedThe active compression test, also known as the SLAP test, can identify superior labrum tears.✓Well SupportedWeakness during abduction with external rotation suggests a rotator cuff tear, potentially involving the supraspinatus or infraspinatus.✓Well SupportedA comprehensive shoulder examination including history, use mechanics, symptoms, and physical examination can achieve 95% diagnostic accuracy.Well 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.

✓

Pain during shoulder impingement testing may imply irritation of an inflamed bursa.

◐Partially SupportedPain and weakness during supination can indicate a distal biceps issue, especially if the long head of the biceps is inflamed.

◐Partially SupportedLateral deltoid strength is a composite of the deltoid muscle and the supraspinatus.

◐Partially SupportedThe anterior and posterior deltoid muscles can be tested by resisting forward and backward pushing movements, respectively.

◐Partially SupportedHearing crepitus during passive internal rotation from an abducted position may indicate bursitis.

◐Partially SupportedA ruptured pectoralis tendon from the bone can be identified by bruising down the arm rather than the chest wall.

◐Partially SupportedPhysical examination can reveal abnormalities like atrophy or asymmetry for diagnosing shoulder and nerve-related issues.

◐Partially SupportedA thorough history and physical exam can achieve approximately 95% diagnostic accuracy for shoulder issues without imaging.

◐Partially SupportedThe short head of the biceps does not typically tear or become irritated.

◐Partially SupportedPoor posture, ergonomics, or excessive texting can cause strain in rhomboid muscles and levator scapulae.

◐Partially SupportedTenderness along the acromion perimeter can indicate a deltoid origin tear.

◐Partially SupportedLimited forward elevation of the arm, especially if it causes pain on the final degrees of motion, can indicate shoulder stiffness.

◐Partially SupportedSpecific shoulder maneuvers provide approximately 95% corroborative accuracy with the patient's history of shoulder pain.

◐Partially SupportedAdhesive capsulitis limits shoulder abduction and causes pain and stiffness.

◐Partially SupportedPushing up against resistance with the elbow fully elevated and arm straight ahead isolates the long head of the biceps.

◐Partially SupportedInternal rotation strength is a composite of the pectoralis major and the subscapularis muscle.

◐Partially SupportedAtrophy in the upper trapezius can result from neck surgery or nerve injury, leading to asymmetry.

◐Partially SupportedDistinguishing between frozen shoulder and chronic rotator cuff issues involves assessing stiffness and range of motion.

◐Partially SupportedShoulder motion primarily involves the deltoid muscle for flexion, extension, and abduction, and the rotator cuff muscles.

◐Partially SupportedExcessive posterior-anterior and inferior translation of the humeral head can indicate a capacious capsule.

◐Partially SupportedAdhesive capsulitis (frozen shoulder) can significantly limit internal rotation, potentially to 30 degrees from a normal 70 degrees, and cause pain.

◐Partially SupportedStabilizing the scapula is important when assessing abduction to isolate glenohumeral joint movement.

◐Partially SupportedThe area where the brachial plexus passes through the shoulder is naturally one of the most tender areas.