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Weekly · Sunday Morning

Five longevity claims.
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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

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GLP-1s: Safe Dosing, Nutrition & Impact on Longevity | Rhonda Patrick, Ph.D. — Whalespan

Content›Video›GLP-1s: Safe Dosing, Nutriti…

GLP-1s: Safe Dosing, Nutrition & Impact on Longevity | Rhonda Patrick, Ph.D.

Peter Attia8m · 2025-10-22

Claims Made

17

Claims Supported

12

Support Rate

71%

Support rate

12 of 17 claims supported

12 supported5 partial / not

Claims from this content

16

✓Well SupportedIndividuals taking GLP-1 receptor agonists for weight loss should incorporate resistance training and higher protein intake to mitigate skeletal muscle loss.✓Well SupportedThe approach to using GLP-1 receptor agonists involves slow and steady dose escalation, as yo-yoing on and off these drugs is likely detrimental.✓Well SupportedLiquid protein shakes are acceptable for individuals on GLP-1 agonists who might not meet protein targets due to anorexia.◐Partially SupportedGLP-1 receptor agonists may offer geroprotective benefits independent of weight loss.Partially Supported

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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.

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N. Park

2d

Would love a "what would change this verdict" RSS feed. Sign me up if it exists.

◐

The majority of therapeutic benefit from tirzepatide is achieved at doses of 5 to 7.5 milligrams.

✓Well SupportedMicro-dosing GLP-1 receptor agonists may offer benefits independent of weight loss in individuals of normal weight without type 2 diabetes.

✓Well SupportedGLP-1 agonists may improve Alzheimer's biomarkers and are valuable for high-risk individuals if weight and lean mass loss are prevented.

✓Well SupportedGLP-1 receptor agonists may be geroprotective in individuals with type 2 diabetes and obesity by correcting metabolic dysfunction.

◐Partially SupportedPotential heart issues or bone loss with GLP-1 receptor agonists may be influenced by training status and amino acid intake.

◐Partially SupportedInjecting GLP-1 agonists into the abdomen may result in greater anorexic effects compared to injecting into the leg or buttock.

◐Partially SupportedGLP-1 agonists can be used to treat metabolic conditions in individuals who are not obese, including those with diabetes and low body weight.

◐Partially SupportedPatients on tirzepatide may need to prioritize easily digestible protein sources like liquid shakes over solid foods such as steak or large chicken breasts to meet protein intake goals.

◐Partially SupportedApproximately 15-20% of patients are prescribed GLP-1 receptor agonists like tirzepatide.

◐Partially SupportedAdministering GLP-1 agonists to individuals with a BMI of 23 can be done without causing weight loss with careful nutritional strategies.

◐Partially SupportedGLP-1 receptor agonists can positively impact diabetes management in patients with a BMI of 23 when combined with careful nutrition.

◐Partially SupportedTirzepatide at a dose of 2.5 milligrams can significantly improve glucose tolerance test results within approximately 3 to 6 months, even in individuals with severe metabolic dysfunction and without causing weight loss.