Disclaimer: This article is for informational and educational purposes only and is not intended as medical advice. Always consult a qualified healthcare provider before making dietary changes or starting supplements.

If you’ve spent any time reading about PCOS, you’ve probably come across the term “insulin resistance.” It’s mentioned constantly — by doctors, in online forums, on wellness blogs. But what does it actually mean for your body, and why is it such a big deal for women with PCOS?

Let’s break it down in plain language.

What Is Insulin Resistance?

Insulin is a hormone made by your pancreas. Its main job is to help glucose (sugar from food) move out of your bloodstream and into your cells, where it’s used for energy. Think of insulin as a key that unlocks the door to your cells.

When you have insulin resistance, those “locks” stop responding properly to the key. Your cells don’t open up as easily, so glucose builds up in your blood. Your pancreas responds by producing more insulin, trying harder to force the door open.

The result: you end up with higher than normal insulin levels circulating in your blood — even if your blood sugar appears normal on standard tests.

How Common Is It in PCOS?

Research suggests it is common. Studies estimate that 50–70% of women with PCOS may have some degree of insulin resistance (Teede et al., 2023), and this appears to occur regardless of weight. This is a crucial point: insulin resistance in PCOS isn’t just a “weight thing.” Lean women with PCOS can be insulin resistant too.

It’s also frequently underdiagnosed. A standard fasting glucose test can come back normal while insulin resistance is already well established. This is because your pancreas is compensating by producing extra insulin. The problem is hidden until you specifically test insulin levels.

Why Women With PCOS Pay Attention to Insulin

Here’s where it gets interesting. Researchers continue to study how insulin relates to the PCOS experience:

What the research explores

Researchers are studying the relationship between insulin and other hormones in PCOS. If you’re curious about how insulin resistance may relate to your experience, your doctor can help you understand what’s relevant to your situation. Common topics women discuss with their healthcare providers include energy levels, cycle regularity, skin changes, and weight management.

This is why many women with PCOS choose to pay attention to blood sugar balance as part of their daily lifestyle.

How to Know If You’re Insulin Resistant

If you have PCOS, it’s worth asking your doctor to test beyond just fasting glucose. Useful markers include:

  • Fasting insulin — this is the most direct measure, but not always included in routine blood work
  • HOMA-IR — a calculated ratio using fasting glucose and fasting insulin
  • HbA1c — measures average blood sugar over 2–3 months
  • Oral glucose tolerance test (OGTT) with insulin — tracks how your body handles a glucose load over 2 hours

Common signs that suggest insulin resistance (even without blood tests):

  • Intense sugar or carb cravings
  • Energy crashes after meals
  • Difficulty losing weight despite effort
  • Dark patches of skin (acanthosis nigricans), often on the neck or underarms
  • Feeling shaky, irritable, or anxious when meals are delayed

What You Can Do About It

The good news is that many women find that small, consistent lifestyle habits make a big difference in how they feel day-to-day. You don’t need to overhaul everything overnight.

Nutrition Strategies

  • Pair carbs with protein and fat. Many women find that eating carbs alongside protein and fat helps them feel more satisfied and energised. A banana alone hits differently than a banana with almond butter.
  • Prioritise fibre. Focus on getting fibre from vegetables, legumes, and whole grains. It keeps you full and supports good digestion.
  • Consider meal order. Some women find that eating vegetables and protein before carbs in a meal helps them feel more satisfied.
  • Reduce refined sugars and processed foods. These tend to cause energy crashes and leave you feeling less satisfied.

Movement

You don’t need to do intense cardio every day. A combination approach works well for many women:

  • Resistance training (2–3x per week) — great for building strength and confidence
  • Walking (daily, especially after meals) — a simple habit many women swear by
  • Low-intensity movement — yoga, swimming, cycling at a comfortable pace

Sleep and Stress

These are often underrated but important for how you feel day-to-day. Many health professionals recommend 7–9 hours of quality sleep and finding stress management practices that work for you.

Talk to Your Doctor

Some women with PCOS discuss supplements and other options with their healthcare providers. If you’re curious, bring it up at your next appointment — your doctor can advise on what’s appropriate for your individual situation.

The Bottom Line

Insulin resistance is a common metabolic pattern — and understanding it can help you have better conversations with your doctor. It’s something many women with PCOS experience, and learning about it is an important step toward informed conversations with your healthcare provider.

If you’re looking for a lifestyle app that makes food logging and meal planning easier, take our free PCOS lifestyle quiz to find your focus. You can also join the Nouri waitlist for early access to an AI-powered lifestyle companion built for women with PCOS.