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.

Why do most diets fail? — Whalespan

Content›Video›Why do most diets fail?…

Why do most diets fail?

Paul Saladino9m · 2022-11-19

Claims Made

17

Claims Supported

10

Support Rate

59%

Support rate

10 of 17 claims supported

10 supported7 partial / not

Claims from this content

14

✕Not SupportedNewer diabetes medications that promote weight loss may lead to severe repercussions, including thyroid cancer and other devastating medical conditions, and could be removed from the market in the future.✕Not SupportedCalorie restriction and intentionally stopping eating before satiety are unsustainable long-term strategies for mammals.◐Partially SupportedThe ketogenic diet is sustainable and effective because it allows individuals to reach a state of comfortable satiety while keeping insulin levels low enough to access stored fat.◐Partially SupportedKeto, ketovor, and carnivore diets are successful for many because they are nutrient-dense and activate satiety hormones, unlike typical 'move more, eat less' advice.

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.

✕Not Supported

Calorie restriction, defined as energy restriction leading to eating before satiation, is a form of food restriction that is torturous for mammals.

◐Partially SupportedThe calorie is a unit of measurement for energy required to raise water temperature, not a direct representation of the usable energy derived from food.

◐Partially SupportedThe human body is an open system, not a closed system, and therefore thermodynamic laws as applied to closed systems do not directly apply to human caloric needs and intake.

◐Partially SupportedMammals do not have the prefrontal cortex capacity to voluntarily stop eating before satiation; they rely on hardwired instincts to ensure adequate food intake.

✕Not SupportedMost diets fail because they are based on calorie restriction, which is an inappropriate strategy for mammals.

✕Not SupportedCalories in protein are not solely used for fuel, but also for building and repair functions.

◐Partially SupportedFat is used for hundreds of functions in the human body, including cell membrane and myelin sheath repair, and hormone production.

✕Not SupportedNew diabetes medications that promote weight loss may lead to repercussions such as disease or being taken off the market within five to ten years.

◐Partially SupportedA nutrient-dense diet high in healthy fat and adequate in protein, or high in protein and adequate in fat, promotes satiety and facilitates fat loss without compromising bone density, muscle, or connective tissues.

◐Partially SupportedMaintaining very low insulin levels through a low-carbohydrate, adequate-protein, and adequate-fat diet allows access to stored fat for sustainable fat loss.