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's thoughts on fasting and ketosis for females (AMA #3) — Whalespan

Content›Video›Peter's thoughts on fasting …

Peter's thoughts on fasting and ketosis for females (AMA #3)

Peter Attia7m · 2020-01-24

Claims Made

9

Claims Supported

4

Support Rate

44%

Support rate

4 of 9 claims supported

4 supported5 partial / not

Claims from this content

8

✕Not SupportedNutritional ketosis is not a compelling strategy for women experiencing fertility issues or trying to conceive.◐Partially SupportedA ketogenic diet may improve fertility in individuals with metabolic syndrome, insulin resistance, or type 2 diabetes by reducing inflammation.◐Partially SupportedFollowing a ketogenic diet for a year, Peter Attia's sister lost 50 pounds and reduced her hemoglobin A1C from the 12s to the 5s.◐Partially SupportedPeter Attia's sister required insulin during her third pregnancy despite a ketogenic diet.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.

◐

Elevated ketone levels during famine suppress FSH and LH in women, suggesting a mechanism to halt reproduction during scarcity.

◐Partially SupportedKetosis can be an effective tool for treating type 2 diabetes and gestational diabetes.

?Limited ResearchKetosis may not be the optimal strategy for women who are pregnant.

✕Not SupportedRestricting carbohydrates to the point of ketosis is not necessarily the best strategy for most individuals.