What It Measures
The amount of insulin hormone produced by the pancreas, measured after 8-12 hours of fasting.
Fasting insulin is one of the earliest markers of metabolic dysfunction. It rises years before glucose becomes abnormal, making it a critical early warning sign for insulin resistance.
Current Value
What High Means
Elevated fasting insulin (hyperinsulinemia) is the hallmark of insulin resistance and a precursor to type 2 diabetes. It also drives inflammation, fat storage, and cardiovascular risk.
Possible Symptoms
Weight gain (especially abdominal), difficulty losing weight, sugar cravings, fatigue after meals, skin tags, acanthosis nigricans
What Low Means
Very low insulin may indicate type 1 diabetes, late-stage type 2 diabetes (pancreatic burnout), or very low carbohydrate intake.
Possible Symptoms
Weight loss, frequent urination, excessive thirst (if T1D)
Risk Factors
Type 2 diabetes, cardiovascular disease, NAFLD, PCOS, cancer risk
Actionable Advice
Supplements
- •Berberine
- •Chromium
- •Magnesium
- •Inositol
- •Alpha-lipoic acid
Diet & Lifestyle
- •Reduce refined carbohydrates and sugar
- •Resistance training (builds insulin-sensitive muscle)
- •Time-restricted eating / intermittent fasting
- •Prioritize protein at every meal
- •Walk after meals (lowers post-meal insulin)
- •Get adequate sleep
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Historical Trend
Related Biomarkers
Resources & Studies
All Readings
| Date | Value | Change |
|---|---|---|
| 2026-01-28 | 18.6 uIU/mL | +2.4 |
| 2025-08-25 | 16.2 uIU/mL | — |