Your Biomarkers
years (30–80)
55
Estimated 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)
Hypertension
With condition
+26.6 years
Without
-8.8 years
35.4 year gap (p < 0.001)
Hyperglycemia
With condition
+23.3 years
Without
-5.6 years
28.9 year gap (p < 0.001)
Obesity
With condition
+2.8 years
Without
-2.0 years
4.7 year gap (p < 0.001)
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.