Performance · Aerobic ceiling
Men Women (soon)
VO2 max is the strongest single predictor of all-cause mortality known to medicine — stronger than smoking, diabetes, or coronary disease for healthy adults.
Optimal range
>50ml/kg/min
Avg. cost (US)
$200
Test frequency
Annually (CPET); daily (estimated)
When to measure
Direct measurement requires a CPET (cardiopulmonary exercise test) lab. Estimated values from wearables (Garmin, Apple Watch) are good enough for tracking trends.
How to measure
CPET ($150–$300) for accuracy; daily wearable estimate for tracking.
Average cost
≈ $200 cash price. Often covered by insurance with relevant ICD-10.
Signs your level is off
Symptoms if low
Below 40 ml/kg/min in a healthy male under 45 indicates significantly elevated all-cause mortality risk.
Symptoms if high
No upper limit clinically — elite endurance athletes regularly exceed 70 ml/kg/min with no health detriment.
Test these together
These biomarkers contextualize and unlock a clearer picture than any single value can.
Deeper reading
Protocols that move this marker
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