Keto and Longevity Biomarkers: What Tests to Track for Long-Term Health
Longevity medicine tracks specific biomarkers that predict long-term disease risk and vitality. On keto, monitoring these markers shows just how powerfully diet affects health.
Fasting Insulin (Most Underused)
Not routinely tested but extremely predictive of metabolic health. Target: under 5 mIU/L. Keto consistently reduces fasting insulin dramatically.
Triglycerides
Target: below 1.0 mmol/L (UK units). High triglycerides are a powerful predictor of cardiovascular risk. Keto reliably reduces triglycerides by 30–50%.
HDL Cholesterol
Target: above 1.3 mmol/L for women, above 1.0 mmol/L for men. Keto consistently raises HDL.
Triglyceride:HDL Ratio
Target: below 1.0. One of the best single cardiovascular risk predictors. Most keto practitioners achieve excellent ratios.
HbA1c
Target: below 5.7% (pre-diabetic threshold). Regular HbA1c testing shows the cumulative metabolic benefit of sustained keto.