Insulin resistance and PCOS: what should I eat to support ovulation?

What insulin has to do with ovulation

When your body needs more and more insulin to manage blood sugar, that extra insulin doesn't just sit there. It can nudge your ovaries to make more androgens, like testosterone. Higher androgens can stall the follicles that are supposed to mature and release an egg. That's one reason a woman with PCOS can have long cycles, or cycles where she can't tell whether she ovulated at all.

So food matters here. Just not in the way the internet keeps yelling about.

Why "cut every carb" keeps backfiring

I've been there. I tried keto when I was desperate, and it nearly cost me more than it gave me. Here's what I see in so many high-achieving women with PCOS: coffee as breakfast, a skipped lunch because the calendar was full, a workout on an empty tank, then the evening crash. Then she blames herself for "no willpower."

That pattern is hard on blood sugar and hard on stress hormones, and neither one is helping your ovaries. Keto, gluten-free and dairy-free aren't automatic PCOS requirements. You also don't have to give up the foods you grew up on.

What steady eating looks like (with real food)

• Eat breakfast. Eggs, toast and fruit. Greek yogurt with berries and oats. Simple counts.
• Pair your carbs. Rice with chicken, beans and vegetables. You don't fear the rice; you give it company.
• Don't run on empty until 3 p.m. Regular meals keep you out of the starving-at-night cycle.
• Lift something. Strength training helps your muscles use glucose. Hard workouts on no food and no sleep can work against you.
• Protect your sleep. Short sleep makes blood sugar harder to manage the next day.
• Change a few things, not fifteen. The plan you can actually keep beats the perfect plan you quit in week two.

How you'll know it's working

Not by the scale alone, and not by how "clean" you ate. For a woman trying to get pregnant, the question is whether your ovulation is showing up: earlier, clearer, more consistently. One client of mine was living on coffee breakfasts and skipped meals. When she started eating steadily, we started seeing signs of ovulation that hadn't been there before. That's the result I care about.

If you're on metformin or another medication, keep your doctor in the loop before changing anything, and ask whether your blood sugar or insulin has been checked.

Where general advice stops

This page can tell you what helps a lot of women with PCOS. It can't tell you whether blood sugar is your main problem, or whether you've been fixing your plate while the real issue is timing, stress, or the second half of your cycle. Reading that takes your actual cycles, your tracking and your labs together.

That's what I do in a PCOS Fertility GPS™ Assessment: where you're getting stuck, why, and where I'd focus next.

Sources: International Evidence-based Guideline for the Assessment and Management of PCOS, 2023 · Summary of the 2023 guideline, Acta Obstet Gynecol Scand, 2024 · Episode: "Insulin Resistance and PCOS: What to Eat to Support Ovulation," PMOS and Prosecco

More answers: PCOS fertility questions, answered