Your Biomarkers
The defaults below describe a mildly at-risk 55-year-old — slightly elevated BP, glucose, HbA1c, total cholesterol, and BMI; lower-than-typical HDL; modestly elevated inflammation. The opening result is around +2 years older than calendar age, so you can see the calculator react to a real profile rather than a healthier-than-average one. Drag the sliders to your own measurements (or pick a sample profile below) to see your actual biological age.
Biomarker Breakdown
How each biomarker compares to what's typical for your age
Where You Fall
KDM age acceleration distribution (1,907 NHANES participants)
Method Comparison
For biological age, domain knowledge alone beats ML. Hybrid outperforms both. The calculator above uses the KDM (domain) formula.
Clinical Validation
How age acceleration correlates with actual health conditions (n=1,907)
Risk Factor Staircase
Mean age acceleration by number of risk factors
Each additional risk factor adds ~20 years of KDM age acceleration. People with zero risk factors appear 14 years younger biologically.
Not medical advice. This calculator implements the Klemera-Doubal method for educational purposes. Biological age estimates are population-level statistical associations, not individual diagnoses. Consult your physician for health assessments.