Biological Age Biomarkers

Measurable indicators of biological versus chronological age. Epigenetic clocks, functional markers, molecular panels, and what the evidence says about each.

Biological age biomarkers are measurable indicators that reflect how old your body is functioning at a cellular or system level, independent of your birth year. Some have strong clinical evidence. Others are useful directional signals with limitations. This hub tracks each biomarker category with honest notes on what each does and does not prove.

Epigenetic Clocks

DNA methylation-based biological age estimates. The most studied class of biomarkers for measuring biological rather than chronological age.

strong / widely studied molecular

Inflammatory Markers

Signals associated with chronic inflammation and aging risk. Elevated chronic inflammation is linked to accelerated biological aging.

strong / clinical use molecular

VO2 Max

Cardiorespiratory fitness marker associated with healthspan and mortality risk. One of the strongest predictors of longevity in otherwise healthy adults.

strong / clinical use functional

Grip Strength

Functional strength marker often associated with aging outcomes. Declining grip strength correlates with increased all-cause mortality risk.

strong / clinical use functional

Telomere Length

Length of protective caps on chromosomes that shorten with age. Controversial as a standalone biomarker due to high variability.

mixed / still debated molecular

Glucose Regulation

Blood sugar control markers that reflect metabolic aging. Chronic glucose dysregulation accelerates multiple aging pathways.

strong / clinical use metabolic

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Research publication: Evidence levels are noted per entry. This content is for educational purposes and does not constitute medical advice. Data reflects current research status and is updated as the field evolves.