Fasting Insulin and HOMA-IR

Fasting insulin and the derived HOMA-IR score reveal insulin resistance years before fasting glucose drifts up — the earliest commonly available metabolic marker.

2 min read June 3, 2026 AgeGen Editorial
Fasting Insulin and HOMA-IR — AgeGen

Fasting insulin and the derived HOMA-IR score reveal insulin resistance years before fasting glucose drifts up. Together they are the earliest commonly available marker of metabolic dysfunction.

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Fasting insulin moves years before fasting glucose does.

Transcript & sources → All videos

Mr. Age is AgeGen's editorial character. Facts come from the protocol above.

The biomarker

  • Name: Fasting Insulin + HOMA-IR
  • Units: µU/mL; HOMA-IR unitless
  • Standard reference range: Insulin < 25; HOMA-IR varies by lab
  • Optimal range: Insulin < 6; HOMA-IR < 1.5

How to read your result

ValueInterpretation
Insulin < 5Optimal
5–8Acceptable
8–12Borderline
≥ 12Insulin resistance likely
HOMA-IR > 2Insulin resistance
HOMA-IR > 3Clear resistance

What moves the needle

  • Diet. Reduce refined carbs and sugary drinks.
  • Weight. 5–10% loss often normalises.
  • Testing. Recheck every 3 months.
  • Movement. Add daily walking + 2x strength.

Why this test is worth asking for

  • Fasting insulin reveals insulin resistance years before fasting glucose drifts up — the dysfunction is visible while it is still reversible.
  • The derived HOMA-IR score turns two fasted numbers into a single, trackable resistance index.
  • It is the earliest commonly available marker of metabolic dysfunction, so it catches what a glucose-only panel misses.

Sources

AgeGen lab guides are educational only. We do not provide medical diagnosis, prescribe brands, or recommend specific doses. Talk to a licensed clinician before changing your supplement or medication routine.

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