Protocolsnutrition
nutritionModerate-High

Insulin Resistance Protocol

Protocol to improve insulin sensitivity through diet, meal timing, exercise, sleep and targeted supplements.

Evidence Score

78/100

Developer

Jason Fung, Benjamin Bikman, functional medicine

Duration

3 to 6 months for meaningful improvement, with ongoing habits after that

Steps

27 phases

Used for

3 conditions

Protocol Overview

Protocol to improve insulin sensitivity through diet, meal timing, exercise, sleep and targeted supplements. Insulin resistance is a root driver of type 2 diabetes, PCOS, fatty liver and heart disease.

Used For

Insulin resistancemetabolic syndromeprediabetes

Key Resources

The Diabetes Code by Jason Fung, "Why We Get Sick" by Benjamin Bikman, Diabetes Prevention Program research, DiRECT trial (Lancet, 2018), low-carb and fasting research

Supplements & Herbs

Safety Profile

Contraindications & Risks
Berberine, fasting and low-carb eating lower blood sugar: if you take diabetes medication (especially insulin or sulfonylureas), your prescriber adjusts it first to prevent dangerous lows. SGLT2 inhibitors plus very low-carb eating raise ketoacidosis risk. Fasting is not for type 1 diabetes without close supervision, pregnancy, breastfeeding, eating disorders or children. Metformin can lower B12. Berberine is not for pregnancy
Important Notes

Most US adults have at least one marker of poor metabolic health, and insulin resistance sits behind type 2 diabetes, PCOS, fatty liver, metabolic syndrome and heart disease, and is linked to Alzheimer's disease. Frequent high insulin, from refined carbs and constant eating, makes cells less responsive to insulin over time. Fasting insulin is one of the earliest signs. HOMA-IR = (fasting insulin x fasting glucose) / 405. The approach has two sides: lower insulin exposure (fewer carbs, fewer eating windows) and improve insulin sensitivity (exercise, weight loss, sleep, supplements). Lifestyle change has strong evidence: in the Diabetes Prevention Program, about 7% weight loss with exercise cut progression to diabetes by 58%. Berberine has several trials with glucose effects similar to metformin. Inositol helps PCOS-related insulin resistance. Resistance training builds the muscle that clears glucose. For type 2 diabetes, remission is possible for some people: in the DiRECT trial (Lancet, 2018), 46% of people on a low-calorie diet program were in remission at 12 months, and in Virta's non-randomized ketogenic study (Hallberg, Diabetes Therapy, 2018), 60% of people who completed one year had an A1C under 6.5% on metformin alone or no diabetes medication. Remission is most likely earlier in the disease and with larger weight loss, and any medication change is made by your prescriber.

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EvidenceModerate-High
Evidence Score78/100
Categorynutrition
Duration3 to 6 months for meaningful improvement, with ongoing habits after that

About Evidence Score

The Evidence Score (0 to 100) rates the strength of evidence from studies in people for the uses listed: higher means stronger, more consistent research. It does not measure safety. It is not medical advice.

For education, not medical advice. Talk with a licensed clinician before you start, and never stop or change a prescribed medication without your prescriber.