Insulin & PCOS guide
What your HOMA-IR score means, and what you can do about it.
What is HOMA-IR?
HOMA-IR stands for the Homeostatic Model Assessment of Insulin Resistance. It is a simple score that shows how hard your body has to work to keep blood sugar in a normal range. It uses two numbers from one fasting blood test:
HOMA-IR = (fasting insulin in µU/mL × fasting glucose in mg/dL) ÷ 405
When your cells respond well to insulin, a small amount keeps glucose steady and the score stays low. When cells become resistant, your pancreas releases more insulin to compensate. Glucose can look completely normal for years while insulin quietly climbs. That is why HOMA-IR can flag a problem long before a standard sugar test or HbA1c does.
How to read your score
- Below 1.9: optimal insulin sensitivity.
- 1.9 to 2.9: early insulin resistance.
- Above 2.9: significant insulin resistance.
Labs and research studies use slightly different cut-offs, so treat these bands as a guide. Your doctor will read your score alongside your symptoms, weight, family history and other tests.
Why HOMA-IR matters for South Asian women with PCOD
Insulin resistance is one of the main drivers of PCOS (often called PCOD in India). It is found in a large share of women with the condition, including many who are not overweight. High insulin signals the ovaries to make more testosterone, which can lead to irregular periods, acne, hair thinning, unwanted facial hair and trouble ovulating.
South Asian women face an extra risk. At the same body weight, people of South Asian descent tend to carry more fat around the abdomen and organs and have less muscle mass than many other groups. This pattern, sometimes called “thin-fat”, means insulin resistance can develop at a normal BMI. It also helps explain why type 2 diabetes appears earlier, and at lower weights, across India, Pakistan, Bangladesh and Sri Lanka.
For a woman with PCOD, a normal weight and a normal fasting sugar don’t rule out insulin resistance. Checking HOMA-IR gives you and your doctor a clearer picture and a baseline to measure progress against.
How lifestyle changes improve insulin resistance
Insulin resistance responds well to everyday habits, often within a few months. The changes that make the biggest difference are steady ones you can repeat:
- Strength training: muscle is the body’s largest store for glucose. Two to three sessions a week improve how well your muscles respond to insulin.
- A walk after meals: 10 to 15 minutes of walking after lunch and dinner helps flatten blood sugar spikes.
- Protein and fibre first: build plates around dal, paneer, eggs, sprouts and vegetables, and keep refined rice, maida and sugary chai in smaller portions. See our PCOS diet chart with Indian foods and list of protein-rich vegetarian foods.
- Morning sunlight and steady sleep: daylight soon after waking helps anchor your circadian rhythm. Even a few nights of short or irregular sleep can raise insulin resistance.
- Stress care: long-term high cortisol pushes blood sugar up. Breathing exercises, yoga or a short walk outdoors all help.
For women who carry extra weight, losing even 5 to 10 percent of body weight can restore more regular ovulation. Retest HOMA-IR after about three months of consistent habits to see your progress, and read about other causes of irregular periods if your cycle stays unpredictable.
This calculator is for general information and is not a substitute for medical advice. Always discuss your lab results with a qualified doctor, especially before starting or changing medication such as metformin.