Insulin resistance explained — how does it develop?
Insulin resistance develops when cells respond less to insulin, forcing the pancreas to produce more to keep glucose normal. It precedes type 2 diabetes by years to decades.
Full answer
Insulin resistance develops over time as cells become less responsive to insulin's signal to absorb glucose, forcing the pancreas to produce more insulin to maintain normal blood glucose. It precedes type 2 diabetes by years to decades and drives much of cardiometabolic disease — hypertension, dyslipidemia, NAFLD, PCOS, and elevated cardiovascular risk. Early detection is the entire point: fasting insulin and HOMA-IR detect the resistance phase, while A1C and glucose only rise after pancreatic compensation begins to fail. oMeds provider review uses fasting insulin, HOMA-IR, A1C, fasting glucose, triglyceride/HDL ratio, and ApoB to characterize metabolic flexibility.
Educational. Not a substitute for individualized provider review.
- HOMA-IR — Primary source · oMeds
- Reviewed by Dr. Laura Purdy, MD, MBA · Clinical Director, oMeds · Last reviewed 2026-05-29