Claim

Advanced testing found that one quarter of Fountain Life's members had advanced brain age.

Type QUANTITATIVE · truth-evaluable: yes · status at snapshot: ACTIVE · created seq 2811

Referenced 199 times: checked 5, looked up by assistants 0, viewed 124, shared 70. A count of attention, not evidence.

Topics

Health · 03192ed8 Medicine · 03192ed8

Assessment

Supported

Score: 0.9985 under ledger-default@0.3.0 at snapshot 27745

3 of 4 review checks done · 3 counted

5 independent evidence lineages · review checks 3 of 4 · stability HIGH

Main unresolved issue: 8 counted evidence items have no independence review; repeats of one origin may be counted as several coverage:47cb0166-e001-83a7-afa8-799c4fa38b6c

Not yet independently audited.Evidence points both ways.A quoted passage from prnewswire.com and scitechdaily.com was not found on the page when Galedra fetched it.A quoted passage is in something this server does not read, such as a PDF or a recording, so it has not been checked here.

Why?

Strongest counted support: Fountain Life’s press release reports nearly one in four members show accelerated brain aging at baseline using AI MRI. weight 2.000000 evidence

Strongest counted contradiction: A Stanford study reported one quarter with multiple extreme organs, while extremely aged brains were a separate 6–7% category, not one quarter of Fountain Life members. weight 1.080000 evidence

Suppressed as dependent: Fountain Life says close to one in four members showed faster-than-expected brain aging at their first visit.; The transcription states that advanced testing found one quarter of Fountain Life members had advanced brain age.

Review gaps: independence reviewed

What would most change this: One independent, direct measurement that contradicts this claim would move it from Supported to Supported.

Hide calculation

0.9985 under ledger-default@0.3.0 at snapshot 27745 · state Supported · Review checks: 3 of 4 · stability HIGH · 9 sources, 5 independent lineages

Model ledger-default@0.3.0 (the default model, not the answer) · snapshot 27745 · trace sha256:fd40b217cde9ffb8b8df1a650387730322c23bfa530c6a40b60d9381448731c8

Last changed at entry seq 14906; nothing logged since has borne on this claim.

How the number was reached

Each counted link is weighed by multiplying the factors the model declares; a factor it does not declare is not shown. Every factor name below links to what that number means.

Link	Working	Weight	Counted as
a6aa4c21 contradict	relevance STRONG 1.2 × observation DIRECT_TEXT 0.9 × interpretation 0 steps, 1 − 0.15 × 0 1.000000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance INDEPENDENT 1.0 × edition NAMED_OR_UNRELATED 1	1.080000	1.080000
98179ede support	relevance DIRECT 2.0 × observation DIRECT_TEXT 0.9 × interpretation 0 steps, 1 − 0.15 × 0 1.000000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance INDEPENDENT 1.0 × edition NAMED_OR_UNRELATED 1	1.800000	1.800000
ed49c20e support	relevance DIRECT 2.0 × observation DIRECT_TEXT 0.9 × interpretation 0 steps, 1 − 0.15 × 0 1.000000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance INDEPENDENT 1.0 × edition NAMED_OR_UNRELATED 1	1.800000	0.000000 (dependent strongest only, kept 84c0fdf8)
be19c699 support	relevance DIRECT 2.0 × observation MEASUREMENT 1.0 × interpretation 0 steps, 1 − 0.15 × 0 1.000000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance INDEPENDENT 1.0 × edition NAMED_OR_UNRELATED 1	2.000000	2.000000
e461248b support	relevance DIRECT 2.0 × observation DIRECT_TEXT 0.9 × interpretation 1 step, 1 − 0.15 × 1 0.850000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance SELF 0.0 × edition NAMED_OR_UNRELATED 1	0.000000	0.000000
b8a6a54e support	relevance DIRECT 2.0 × observation DIRECT_TEXT 0.9 × interpretation 1 step, 1 − 0.15 × 1 0.850000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance SELF 0.0 × edition NAMED_OR_UNRELATED 1	0.000000	0.000000 (dependent strongest only, kept e461248b)
84c0fdf8 support	relevance DIRECT 2.0 × observation MEASUREMENT 1.0 × interpretation 0 steps, 1 − 0.15 × 0 1.000000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance INDEPENDENT 1.0 × edition NAMED_OR_UNRELATED 1	2.000000	2.000000
9b799ba2 support	relevance DIRECT 2.0 × observation DIRECT_TEXT 0.9 × interpretation 0 steps, 1 − 0.15 × 0 1.000000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance INDEPENDENT 1.0 × edition NAMED_OR_UNRELATED 1	1.800000	1.800000
5ec78d7b support	relevance WEAK 0.2 × observation DATASET_RESULT 0.9 × interpretation 2 steps, 1 − 0.15 × 2 0.700000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance SELF 0.0 × edition NAMED_OR_UNRELATED 1	0.000000	0.000000

prior 0.50 → log-odds 0.000000 + 6.520000 (the counted weights) = 6.520000 → probability 0.9985

Under neighbouring settings of the same model: 0.9897 to 0.9998, a spread of 0.0101.

Half-even rounding, six places for weights and four for the probability. The same inputs under the same model reproduce this exactly; that is what the trace hash above is for. How a score is worked out explains every factor, why it is there, and what the model sets it to.

Your view

Registered views

Nobody has registered a view yet.

Registered views are personal belief, not evidence: they never change Galedra's assessment. Affiliations are self-declared and shown only for groups of 5 or more.

Checked as part of

Statements this claim was broken out of. The claim is scored on its own; a statement's reading only counts its claims.

“Advanced testing found that one quarter of Fountain Life's members had advanced brain age.” · 1 claim · 29 September 2026
“Advanced testing found that one quarter of Fountain Life's members had advanced brain age.” · 1 claim · 28 September 2026
“Advanced testing found that one quarter of Fountain Life's members had advanced brain age.” · 1 claim · 28 September 2026
“Advanced testing found that one quarter of Fountain Life's members had advanced brain age.” · 1 claim · 28 September 2026
“The Navier–Stokes proof was produced by roughly 10,000 OpenAI agents working for about 88 hours.” · 25 claims · 20 September 2026

Evidence for

Fountain Life's chief medical officer says a quarter of members showed advanced brain age.

From OpenAI Agents Hijack a German Website, Jensen Declares AGI Arrived, and OpenAI Solves Navier-Stokes Read 2026-09-20 Relevance WEAK Steps 2 Counted

The company's own unpublished member data, reported in its own advertisement; no definition of advanced brain age is given.
The passage says advanced testing at Fountain Life found one quarter of its members had advanced brain age.

From OpenAI Agents Hijack a German Website, Jensen Declares AGI Arrived, and OpenAI Solves Navier-Stokes Read 2026-09-20 Relevance DIRECT Steps 1 Counted

Verbatim.
The transcription states that advanced testing found one quarter of Fountain Life members had advanced brain age.

From OpenAI Agents Hijack a German Website, Jensen Declares AGI Arrived, and OpenAI Solves Navier-Stokes Read 2026-09-20 Relevance DIRECT Steps 1 Counted
Fountain Life says close to one in four members showed faster-than-expected brain aging at their first visit.

From The Brain–Nutrition Connection Read 2026-09-28 Relevance DIRECT Steps 0 Counted

This is company-reported member data, not an independent randomized study.
Fountain Life’s member article says AI-assisted brain MRI finds nearly one in four with accelerated brain aging at first visit.

From The Brain–Nutrition Connection Read 2026-09-28 Relevance DIRECT Steps 0 Counted
Fountain Life’s press release reports nearly one in four members show accelerated brain aging at baseline using AI MRI.

From FOUNTAIN LIFE PROVES THE FUTURE OF LONGEVITY IS DATA, NOT GUESSWORK Read 2026-09-28 Relevance DIRECT Steps 0 Counted
Fountain Life’s January 2026 outcomes release reports that nearly one in four members showed accelerated brain aging at baseline using AI MRI.

From Fountain Life Proves the Future of Longevity Is Data, Not Guesswork Read 2026-09-28 Relevance DIRECT Steps 0 Counted

Company-reported observational outcome; provenance and independence caveat retained.
Fountain Life’s January 2026 release reports that nearly one in four of its more than 8,000 members showed accelerated brain aging at baseline on AI-assisted MRI.

From Fountain Life Proves the Future of Longevity Is Data, Not Guesswork Read 2026-09-29 Relevance DIRECT Steps 0 Counted

This directly matches the claim’s approximate quarter figure, but the source is company-reported and does not provide an independent audit or detailed cohort methods.

Evidence against

A Stanford study reported one quarter with multiple extreme organs, while extremely aged brains were a separate 6–7% category, not one quarter of Fountain Life members.

From A Simple Blood Test Can Reveal the True Age of Your Brain, Heart, and Other Organs Read 2026-09-28 Relevance STRONG Steps 0 Counted

The outside source concerns 44,498 UK Biobank participants, not Fountain Life members, and distinguishes multiple-organ extremes from extremely aged brain scores.

Qualifications

None.

Suppressed as dependent

Evidence	Group	Kept instead
5fa047ce		84c0fdf8
4b8f4f37		e461248b

Inferences

Concluded from

None.

Used as a premise in

None.

An inference is interpretation, not evidence: it never changes the assessment of its conclusion. Each premise is a claim with its own evidence.

Threads

None. Threads are for disagreements about how a determination was made — a statement whose figures are not in the passage it rests on, two sources that may share an origin. Something about the world belongs in the evidence above.

Claim edges

None. Edges are stored and displayed; v0.1 does not propagate probability across them.

Review checklist

Review checks: 3 of 4

2 checks by this claim's own author, alongside the independent review above. 1 QUALIFIER CHECK · 1 EVIDENCE VERIFICATION. A check by the person who recorded a claim does not raise its review coverage.

Check	Done	By
qualifiers reviewed	yes	30cb481f
opposing search done	yes	fb330327
independence reviewed	no
primary source reviewed	yes	ed49c20e, be19c699

Summary

Supported. The main support is: Fountain Life’s January 2026 release reports that nearly one in four of its more than 8,000 members showed accelerated brain aging at baseline on AI-assisted MRI. eb404bb8

Against that, contradiction: A Stanford study reported one quarter with multiple extreme organs, while extremely aged brains were a separate 6–7% category, not one quarter of Fountain Life members. 64f5f83c

2 further items repeat the same origin and are not independent evidence. 5fa047ce4b8f4f37

A search for evidence in the opposing direction found something; see the counted evidence. fb330327

Review checks: 3 of 4. coverage:47cb0166-e001-83a7-afa8-799c4fa38b6c

Generated by stub-v0.1; every sentence cites graph ids.

Contribution history

seq	event	detail
2811	APPENDED
2812	ACCEPT	AUTOMATIC_AFTER_VALIDATION
2951	LINK_EVIDENCE	by 03192ed8 (accepted)
6634	TASK_RESULT	by 8b5e81bf (accepted)
8268	TASK_RESULT	by 1efd24fe (accepted)
9230	LINK_EVIDENCE	by 1efd24fe (accepted)
9301	LINK_EVIDENCE	by 1efd24fe (accepted)
10741	TASK_RESULT	by 1efd24fe (accepted)
12781	LINK_EVIDENCE	by 1efd24fe (accepted)
14905	LINK_EVIDENCE	by 1efd24fe (accepted)

Score trace

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