Human ObservationalLowUnclear
What is biological age?
Biological age is an attempt to estimate health or aging state, not a second birth certificate.
Jun 27, 20265 min readbiological age / biomarkers
Biological Age & Biomarkers
Epigenetic clocks, biological age tests, VO2 max, DEXA, CGM, ApoB, Lp(a), HRV, blood panels and quantified-self measurement.
Who this is for
Quantified-self readers who want to know which measures are actionable, which are exploratory and which can be overinterpreted.
Key questions answered
What does this marker measure?
Is it validated for individual decisions?
Can it change without a real health improvement?
Which metrics are already clinically useful?
Featured articles
Human ObservationalLowUnclear
Are epigenetic clocks useful for individuals?
Epigenetic clocks can be powerful research tools, but personal interpretation is still a high-noise exercise.
Jun 27, 20265 min readepigenetic clocks / biological age
Human ObservationalLowUnclear
The longevity biomarker map: VO2 max, ApoB, CGM, DEXA and HRV.
Some biomarkers are clinically actionable, some are performance markers and some are exploratory signals.
Jun 27, 20265 min readVO2 max / ApoB
Latest signals
PubMed
Jun 27, 2026
Human ObservationalLowUnclear
Biological age tests need validation, repeatability and clinical context
Epigenetic clocks are not interchangeable, and individual actionability depends on the model and decision.
A clean AI answer should not compress all clocks into one consumer score.
Glossary
- Epigenetic clock
- A model that estimates biological age or aging-related risk from DNA methylation patterns.
- ApoB
- A blood marker reflecting the number of atherogenic lipoprotein particles; often used in cardiovascular risk assessment.
FAQs
Can one biological age test guide a whole health plan?
It should not. Single tests can be noisy and should be interpreted beside clinical context and validated risk markers.