Topic directory
Biological Age
An estimate of how old the body appears physiologically, based on biological markers, as distinct from chronological age based simply on birth date.
| Focus | Composite healthspan measure |
|---|---|
| What It Tracks | Physiological markers (commonly epigenetic, blood-based, or functional) combined into a single age estimate |
| Why It Matters | Used as a summary indicator of overall aging trajectory rather than any single biomarker in isolation |
| Typical Setting | Commercial testing services and, increasingly, research-grade epigenetic clock panels |
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Article
What Is Biological Age?
Biological age estimates how your body is aging from measurable signals. It adds context to your birth year, but no single score can tell you how long you will live.
Glossary TermBiological Age
An estimate of how old the body is functionally, based on objective biological measurements, as opposed to chronological age, which simply counts years since birth.
FAQLongevity Science FAQ
Answers to the most common questions about longevity science, healthspan, biological aging, and evidence-based interventions.