Which biomarkers actually affect my biological age?
The markers depend on the biological-age model. Clinical PhenoAge uses chronological age and nine blood-test measures. Other models use different inputs, including DNA methylation. A score estimates a research-derived pattern, not your true age or a personal lifespan. 1, 2
Clinical PhenoAge includes albumin, creatinine, glucose, C-reactive protein, lymphocyte percentage, mean cell volume, red-cell distribution width, alkaline phosphatase, and white blood cell count.
Those values are not all contained in a standard metabolic panel and complete blood count. C-reactive protein is usually a separate test, and lymphocyte percentage requires differential information.
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Which marker should I try to change?
A clinician should address clinically relevant findings rather than optimize a formula. A score can change because of temporary illness, measurement differences, or changes unrelated to a meaningful long-term health benefit.
Does a lower score prove I reversed aging?
No. Association with health outcomes in a study does not establish that changing the score reverses aging. Different models can produce different answers for the same person.
Can I compare scores from different services?
Only if the method, inputs, units, and calculation are comparable. A DNA-methylation clock and a blood-biomarker model are not the same measurement.
Bottom line
Understand the model before interpreting the number. Use individual results for clinical assessment, not a claim that a biological-age score is a diagnosis.
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