Your birthday counts the years. Your blood tells the truth.
Aging is not a mystery here. It is a number we measure from your own blood chemistry, track over time, and treat with a clinician-led protocol. Across our verified register, patients test an average of 9.4 years biologically younger than their calendar age. This page explains the measurement, the results, and what it takes to move the number.
We calculate biological age from blood chemistry, built on Levine PhenoAge, a published, peer-reviewed framework that reads the age your physiology is behaving like from standard clinical blood chemistry. No wearable scores, no proprietary black box: validated math, applied to your labs, repeated over time. And it is one lens within a far larger picture, the 440+ biomarkers and functional measures the Methuselah Protocol™ is built on.
We keep a verified outcomes register of every enrolled patient, ages 27 to 90 or older. It is not a highlight reel. It is everyone. The figures here are from the May 2026 analysis, 129 consecutive patients at the time; the register keeps growing. Here is where the register stands today.
The people behind these numbers are on our results page. The methodology, the definitions, and the honest caveats are laid out in full on the evidence page.
Figures from Everest Health's May 2026 analysis of its outcomes register, 129 consecutive enrolled patients at the time. Biological age from blood chemistry, built on the Levine PhenoAge framework.
Among adherent patients with serial testing, 61% did not simply hold the line. Their measured biological age moved backward, by a mean of 1.5 years. And the distribution is the interesting part.
The top decile of serial adherent patients regressed by 7.8 years. The pattern behind that number is unglamorous: they did the protocol. Adherence, not genetics or luck, is the hinge these results swing on.
Knowing your number changes nothing by itself. The Methuselah Protocol™ pairs the measurement with clinician-led work across medications, hormones, body composition, training, and recovery, then proves the effect with serial re-testing. See how it works or compare memberships.
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