Navigating the science of biological age.
Start with the science, not the hype. Understand what each test type measures, compare real products, and find the best fit for your goals.
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Browse our independent database of biological age tests by clock type, accuracy, and price.
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View full comparison database| Test Name | Accuracy Score | Key Biomarkers | Cost | Review |
|---|---|---|---|---|
TruAge Complete TruDiagnostic | 93% | TruAge, Complete, GrimAge, Clock, Biomarkers | $500 | Review |
GrimAge Clock Foundation | 93% | GrimAge, CnqmAge | $200 | Review |
DunedinPACE | 94% | TruAge, GrimAge, DunedinPACE | $155 | Review |

Exercise & Biological Age
The most robustly validated longevity intervention available. We examine the peer-reviewed evidence on how aerobic training, resistance exercise, and VO2 max affect epigenetic clocks and biological age trajectories.
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What Is Biological Age?
Your body's age isn't always what the calendar says. Learn how molecular markers reveal a different story — and what that means for your health.

The Hallmarks of Aging
Fourteen biological processes drive how we age — from DNA damage to chronic inflammation. Discover the framework behind every aging test.

How Epigenetic Clocks Work
A deep dive into DNA methylation, the foundation of the most scientifically validated aging clocks on the market today.
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