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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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Microplastics, Stress, and Male Fertility | Paul Turek, M.D. — Whalespan

Content›Video›Microplastics, Stress, and M…

Microplastics, Stress, and Male Fertility | Paul Turek, M.D.

Peter Attia2m · 2025-06-03

Claims Made

7

Claims Supported

7

Support Rate

100%

Support rate

7 of 7 claims supported

7 supported0 partial / not

Claims from this content

5

✓Well SupportedHigh levels of stress suppress testosterone and fertility.◐Partially SupportedMen have windows of susceptibility to toxins during birth, early development, and puberty.◐Partially SupportedAcute stressors like starvation and intermittent fasting are beneficial, unlike chronic low-level stress.✓Well SupportedOnly a small fraction of the over 880,000 chemicals in production have been fully tested on humans, and none have been studied in combination.◐Partially Supported

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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 stress caused by trying to avoid microplastics can counteract any benefits gained from reducing exposure.