What is insulin resistance in PCOS/PMOS?

Bottom lineInsulin resistance, a central feature of PCOS/PMOS, means cells respond poorly to insulin so the body makes more, and that excess insulin drives the ovaries to produce more androgens, which disrupt ovulation and cause acne and excess hair in a self-reinforcing cycle. It raises the risk of type 2 diabetes, weight gain, and gestational diabetes; exercise, a balanced diet lower in refined carbs, weight management, and sometimes metformin improve both metabolic health and symptoms.

Insulin resistance is a central feature of PCOS/PMOS (and part of why it was renamed to highlight the metabolic side). It means your cells respond poorly to insulin, so your body makes more of it.

How it drives PCOS/PMOS

• Cells don't take up glucose well, so the pancreas produces more insulin
• High insulin stimulates the ovaries to make more androgens (male hormones)
• High androgens disrupt ovulation and cause acne and excess hair
• This creates a self-reinforcing cycle linking metabolism and hormones

This is why PCOS/PMOS is a whole-body condition, not just an ovarian one.

Why it matters for health

Insulin resistance raises the risk of:

• Type 2 diabetes and prediabetes
• Weight gain that's harder to lose
• High cholesterol and cardiovascular risk
• Gestational diabetes in pregnancy

What helps

• Regular physical activity (improves insulin sensitivity)
• A balanced diet lower in refined carbs and sugar
• Weight management if appropriate
• Metformin - a medication that improves insulin sensitivity, sometimes prescribed
• Sleep and stress management

Why it's good news

Targeting insulin resistance can improve both metabolic health and symptoms like irregular periods, often at the same time.

See what diet helps with PCOS and gestational diabetes screening.

Femora helps you track cycle changes as you work on the lifestyle factors that improve insulin sensitivity.