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.

In-N-Out won’t tell me what’s in their food — Whalespan

Content›Video›In-N-Out won’t tell me what’…

In-N-Out won’t tell me what’s in their food

Paul Saladino16m · 2024-12-06

Claims Made

38

Claims Supported

19

Support Rate

50%

Support rate

19 of 38 claims supported

19 supported19 partial / not

Claims from this content

24

✓Well SupportedSeed oils high in linoleic acid increase oxidized LDL and Lp(a), raising cardiovascular disease risk.✓Well SupportedThe amount of acrolein in a large order of In-N-Out French fries on a Tuesday afternoon is equivalent to a pack of cigarettes.◐Partially SupportedIn-N-Out's food contains multiple types of seed oils, including sunflower oil for fries and soybean oil in the spread.✓Well SupportedDeep frying seed oils for one hour can create harmful aldehydes and alkanes comparable to those found in a pack of cigarettes.Partially Supported

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.

◐

A cheeseburger can be made healthier by using grass-fed beef, good quality tomatoes, raw or good quality cheese, and a sourdough bun.

◐Partially SupportedFast food is neither cheaper nor faster than preparing meals at home from grocery store ingredients.

◐Partially SupportedMaking bread at home without dough conditioners or mold inhibitors, or buying bread with transparent ingredients, is a better option than typical commercial bread.

◐Partially SupportedThe GRAS loophole created in the 1950s was not designed for the proliferation of over 10,000 food additives.

◐Partially SupportedThe In-N-Out spread contains preservatives including calcium disodium EDTA, sodium benzoate, and potassium sorbate.

◐Partially SupportedHealthier French fries can be made by cooking potatoes in tallow in the oven.

✕Not SupportedSitting in a car and breathing indoor air, potentially with fragrances and phthalates, is detrimental to health.

◐Partially SupportedIn-N-Out burgers can be ordered without seed oils, spread, or preservatives.

◐Partially SupportedThe In-N-Out bun contains sponge dough, sugar, and potentially sodium acid pyrophosphate or ASO dicarbide, and seed oils.

✕Not SupportedConsuming food with many ingredients, such as buns and spreads, is less healthy than eating plain burgers.

✕Not SupportedConsuming fast food with many unstudied ingredients has cumulatively negative long-term health effects.

◐Partially SupportedIn-N-Out buns contain no di-carbons, no high fructose corn syrup, and no seed oils.

?Limited ResearchThe long-term effects of sodium and acidic sodium phosphate in buns on human health are unknown.

?Limited ResearchThe long-term effects of sodium benzoate, BHT, and BHA on fertility, mood, or sleep are unknown.

◐Partially SupportedFrying foods in seed oils like sunflower oil for extended periods creates high levels of lipid peroxides and rancid oil.

◐Partially SupportedFast food contains ingredients that are not beneficial for human consumption.

◐Partially SupportedPreparing healthy food at home can lead to feeling full for longer, reduced brain fog, less irritability, better sleep, and improved hormones.

◐Partially SupportedA diet of only meat and fruit is a better dietary choice than consuming bread.

◐Partially SupportedEating only meat and fruit can lead to significant positive changes in life.

◐Partially SupportedIn-N-Out spread and buns contain no dyes like yellow five, yellow six, or blue one.