Hormones & periods
Insulin Resistance Symptoms: Signs, Causes and When to Get Tested
Quick answer
Insulin resistance often causes no obvious symptoms, so many people only learn about it through a blood test. Possible signs include dark, velvety skin patches on the neck or armpits, skin tags, weight gathering around the waist, and, in women, PCOS-related changes. A doctor can check your blood sugar to find out more.
Last reviewed NariCareLife editorial team · 5 sources
30 min voice call + free 1-week diet plan
What is Insulin resistance?
Insulin is a hormone that helps move sugar (glucose) from your blood into your cells for energy. With insulin resistance, the cells do not respond well to insulin, so the body has to make more of it to keep blood sugar in range.
Over time, if the body cannot keep up, blood sugar may rise into the prediabetes range and later into type 2 diabetes. Insulin resistance is closely linked with PCOS in women, and South Asian people are known to have a higher risk of type 2 diabetes.
Because insulin resistance develops slowly and quietly, symptoms are often mild or absent. Knowing your risk factors and getting checked is usually more useful than waiting for symptoms.
Common symptoms of Insulin resistance
Often no symptoms at all
Many people with insulin resistance feel completely well. It is commonly found during routine blood tests.
Dark, velvety skin patches
Darker, thicker skin on the back of the neck, armpits, groin or knuckles (acanthosis nigricans) is one of the more visible signs.
Weight around the waist
Carrying extra weight around the tummy is linked with insulin resistance, even when overall weight seems normal.
Skin tags
Small, soft growths on the neck or in skin folds are sometimes seen alongside insulin resistance.
PCOS-related changes
Irregular periods, acne and extra hair growth can go along with insulin resistance in women with PCOS.
Signs of higher blood sugar
If blood sugar has risen, you may notice more thirst, passing urine more often, tiredness or blurred vision. These need a doctor's check.
What can cause Insulin resistance?
- Carrying extra weight, especially around the waist, is one of the strongest risk factors.
- Low physical activity makes muscles less responsive to insulin.
- A family history of type 2 diabetes, and South Asian heritage, raise the risk.
- PCOS is commonly associated with insulin resistance.
- Having had diabetes in pregnancy (gestational diabetes) raises the chance of later insulin resistance.
- Poor sleep, long-term stress and some medicines, such as steroids, can also play a part.
How is Insulin resistance diagnosed?
Doctors do not usually test insulin resistance directly in routine care. Instead, they look at your risk factors and may suggest blood tests such as a fasting blood sugar, an HbA1c test (which reflects average blood sugar over recent months) or an oral glucose tolerance test. These help show whether your blood sugar is normal or in the prediabetes or diabetes range. Your doctor may also check your waist size, blood pressure and cholesterol.
When to see a doctor
Speak to a doctor about a blood sugar check if you have dark skin patches, carry weight around your waist, have PCOS, had gestational diabetes, or have a parent or sibling with type 2 diabetes. It is also worth asking if you are over 30 and have never had a blood sugar test. See a doctor promptly if you notice extreme thirst, passing urine often or unexplained weight loss.
Get medical help promptly if you notice:
- Feeling very thirsty and passing urine much more often than usual.
- Unexplained weight loss, with tiredness.
- Blurred vision, slow-healing cuts or frequent infections.
- Nausea, vomiting, tummy pain or confusion together with high sugar readings (seek urgent care).
In an emergency, call 112 or go to the nearest hospital.
How nutrition and lifestyle may help
Food does not cure or treat Insulin resistance, but everyday habits can support your overall wellbeing alongside the care your doctor recommends.
Pair carbohydrates with protein and fibre
Eating roti or rice with dal, sabzi and curd rather than on its own may help support steadier blood sugar after meals.
Choose whole grains and millets more often
Jowar, bajra, ragi, oats and whole wheat can be part of a fibre-rich plate that keeps you full for longer.
Limit sugary drinks and sweets
Keep sweetened tea, juices, mithai and packaged snacks as occasional choices rather than daily habits.
Walk after meals
A short walk after lunch or dinner is a simple habit that may help support how your body handles meals.
Add strength exercise
Muscle-strengthening activity, such as bodyweight exercises or yoga, can be part of a routine that supports insulin sensitivity.
Protect your sleep
Regular sleep times and enough rest may help support appetite and energy. Discuss any supplements with your doctor.
Indian foods to include
- Moong dal chilla
- Besan or chana-based dishes
- Rajma, chole and lobia
- Jowar, bajra and ragi rotis
- Vegetable-rich poha or upma with peanuts
- Curd and buttermilk
- Paneer or eggs
- Methi, palak and other leafy greens
- Whole fruits such as guava, jamun and apple
- A small handful of almonds or walnuts
Key takeaways
- Insulin resistance often has no symptoms, so testing matters more than waiting for signs.
- Dark skin patches and weight around the waist can be clues.
- PCOS, family history of diabetes and South Asian heritage raise the risk.
- Balanced meals, regular movement and good sleep may help support insulin sensitivity.
Insulin resistance: frequently asked questions
Often there are no early signs of insulin resistance, which is why it is usually found on a blood test. When visible clues appear, the first is often dark, velvety skin on the back of the neck or in the armpits. Weight gain around the waist and, in women, irregular periods may also be early hints.
No, insulin resistance is not the same as diabetes, but it can lead to it. With insulin resistance, the body makes extra insulin to keep blood sugar normal. If this becomes too hard, blood sugar can rise to the prediabetes range and later to type 2 diabetes. Regular check-ups help spot changes early.
Insulin sensitivity can often improve, especially when changes are made early. Regular physical activity, balanced meals, weight management where needed and good sleep may all help support how the body responds to insulin. Your doctor can monitor your blood sugar over time and advise whether any medical treatment is needed.
Insulin resistance is common in women with PCOS, including some who are slim. Higher insulin levels can prompt the ovaries to make more androgens, which may worsen symptoms such as irregular periods, acne and extra hair growth. This is why doctors often check blood sugar in women with PCOS.
Doctors usually check for the effects of insulin resistance with blood sugar tests rather than measuring insulin itself. Common tests include fasting blood glucose, HbA1c and an oral glucose tolerance test. Your doctor will choose the right test based on your history and symptoms, and explain what your results mean.
Yes, insulin resistance can occur at a normal weight. This is more likely if you carry weight around your waist, are not very active, have PCOS or have a family history of type 2 diabetes. South Asian people may develop blood sugar problems at a lower body weight, so risk factors matter as much as the scale.
Sources & references
- Insulin resistance and prediabetes — National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
- Acanthosis nigricans — NHS
- Type 2 diabetes — NHS
- Diabetes — World Health Organization
- Polycystic ovary syndrome (PCOS) — NHS
