What to Eat with PCOS: The Best Foods — and What to Avoid

Why food matters so much in PCOS

PCOS — now also referred to as PMOS (Polycystic Metabolic-Ovarian Syndrome) — is driven by two intersecting problems: elevated androgens (male sex hormones) and insulin resistance. These two issues feed each other in a cycle: excess insulin signals the ovaries to produce more testosterone, and elevated androgens worsen insulin sensitivity further.

Diet directly influences both sides of this cycle. Certain foods spike insulin sharply and repeatedly, keeping the cycle running. Others stabilise blood glucose, reduce inflammation, and actively support the hormonal environment. Choosing the right foods doesn't mean perfection — it means consistently shifting the conditions in your body towards balance rather than disruption.

Three things every PCOS meal needs

1. High protein at every meal

Protein is the most important macronutrient for PCOS. It stabilises blood sugar after meals, keeps you full far longer than carbohydrates do, supports the muscle mass that makes your cells more insulin-sensitive, and reduces the hormonal hunger signals that drive overeating in PCOS women. As a general guide, research suggests aiming for 30–45g of protein per meal — ideally 120–160g across the day. The best sources: chicken breast, turkey, lean beef, eggs, Greek yogurt (plain), cottage cheese, salmon, sardines, and lentils.

2. Low-GI carbohydrates in controlled amounts

Carbohydrates aren't the enemy — but the type and quantity matter enormously. High-GI foods cause rapid blood glucose spikes, triggering the high insulin response that drives PCOS symptoms. Low-GI carbohydrates — lentils, chickpeas, non-starchy vegetables, small amounts of quinoa and sweet potato — provide sustained energy without the spike. Significantly reducing refined carbs is key — many women with PCOS find aiming for under 50–100g net carbs works well, though the right level varies by individual.

3. Healthy fats at every meal

Fat doesn't cause fat gain — it slows digestion, blunts glucose absorption, and helps you absorb the fat-soluble vitamins (A, D, E, K) that are often depleted in PCOS. Avocado, olive oil, eggs, fatty fish, almonds, and pumpkin seeds should appear in some form at every meal. Olive oil in particular has anti-inflammatory properties that are directly relevant to the chronic low-grade inflammation that characterises PCOS.

The best foods to eat with PCOS

These are the foods that consistently appear in the research on PCOS nutrition, and the ones that form the core of a well-designed PCOS meal plan:

Eggs

One of the most complete foods for PCOS. High in protein, rich in choline (essential for liver function), and a source of vitamin D — which is commonly deficient in PCOS. The yolk is important; don't skip it. Eggs appear in 4 of 5 days in most PCOS meal plans for good reason.

Salmon and sardines

Omega-3 fatty acids from fatty fish suppress the inflammatory cytokines chronically elevated in PCOS (TNF-alpha, IL-6), improve adiponectin levels (a fat-burning hormone typically low in PCOS women), and support healthy ovarian function. Aim for fatty fish 3–4 times per week.

Lentils and chickpeas

Legumes are uniquely valuable for PCOS. They contain myo-inositol — one of the most researched nutrients for improving insulin receptor sensitivity in PCOS — alongside soluble fibre that slows glucose absorption, and enough protein to contribute meaningfully to daily targets. Eating them cooled (in salads or meal-prepped the day before) increases their resistant starch content, further blunting the glucose response.

Leafy greens (spinach, kale, rocket)

Dark leafy greens provide magnesium — a mineral that is deficient in the majority of PCOS women and plays a direct role in insulin signalling. They also provide folate, iron, and fibre with virtually no glucose impact. Include them at every meal if possible.

Ground flaxseed

One tablespoon per day provides SDG lignans that compete with testosterone at the androgen receptor — effectively reducing the impact of the elevated androgens that cause many PCOS symptoms. It's also a practical source of omega-3s and soluble fibre. Add it to Greek yogurt, smoothies, or sprinkled over meals.

Pumpkin seeds

One of the best food sources of zinc, which is commonly low in PCOS women. Zinc plays a role in reducing 5-alpha reductase activity — the enzyme that converts testosterone to its more potent form, DHT. A small handful (30g) as a snack or added to meals is enough to make a difference.

Cruciferous vegetables (broccoli, cauliflower, Brussels sprouts)

Contain DIM (diindolylmethane), a compound that supports oestrogen metabolism and androgen clearance through the liver. Lightly cooked (not overcooked) maximises sulforaphane content. Include them in at least one meal daily.

Foods with specific PCOS evidence worth knowing about

Cinnamon — some research suggests cinnamon may help improve insulin sensitivity, though the evidence is still emerging.¹ Use it generously wherever the flavour works: yogurt, overnight oats, curries, roasted vegetables.

Apple cider vinegar — acetic acid slows gastric emptying and reduces post-meal glucose spikes measurably.² Use it as a salad dressing base with olive oil. One to two tablespoons before or during a meal is the typical approach in the research.

Spearmint tea — two cups per day has shown meaningful reductions in free testosterone in two randomised controlled trials.³⁴ The mechanism appears to be anti-androgenic. It won't replace dietary changes, but it's a low-effort addition with real evidence behind it.

Green tea (EGCG) — epigallocatechin gallate improves insulin sensitivity and has mild anti-androgenic effects. Two to three cups per day is the typical therapeutic range seen in studies.

What to avoid with PCOS

The foods that most consistently worsen PCOS symptoms are those that cause rapid, repeated spikes in blood glucose and insulin:

Refined carbohydrates — white bread, white rice, pasta, crackers, and most breakfast cereals digest almost immediately into glucose. The resulting insulin surge drives androgen production and fat storage. These aren't occasional treats to limit — they're the core driver of the insulin-PCOS cycle and worth removing from everyday eating.

Added sugars — sugar in any form (honey, maple syrup, agave, coconut sugar, brown sugar) causes the same insulin response as white sugar. Low-sugar doesn't mean PCOS-friendly; the glucose response is what matters, not the label.

Fruit juice and smoothies — fruit juice can spike blood sugar almost as quickly as a soft drink, with little of the fibre that slows digestion in whole fruit. Whole fruit in small quantities is fine; liquid sugar is not.

Ultra-processed seed oil products — deep-fried foods and packaged snacks made with hydrogenated oils are high in omega-6 fatty acids, which compete with the omega-3s your body needs for anti-inflammatory signalling. Use olive oil as your primary cooking fat. For high-heat cooking, avocado oil is a stable alternative.

Low-fat dairy — full-fat dairy has a lower glycaemic impact than low-fat versions (which often have sugar added to compensate for flavour), and the fat-soluble vitamins in dairy require fat for absorption. Plain full-fat Greek yogurt is genuinely one of the best foods for PCOS. The low-fat, flavoured version is one of the worst.

How to put this into practice

You don't need to change everything at once. The two changes that produce the largest early impact are: aiming for 30–45g of protein at every meal (as a general guide), and removing the highest-GI foods (white bread, white rice, juice, added sugar). Most women notice a meaningful reduction in cravings, hunger, and energy crashes within 1–2 weeks of these two changes alone.

From there, the progression is straightforward: add more of the specific PCOS foods listed above, structure each meal around protein first, and gradually replace refined carbohydrates with legumes and non-starchy vegetables. You don't need to count every gram — the structure matters more than precision.

For a more complete approach, our guide to eating for PCOS insulin resistance covers the mechanisms in more depth. Our high-protein PCOS breakfast guide gives you practical first-meal ideas. And if you're considering time-restricted eating, our intermittent fasting for PCOS guide covers which windows work best and where most people go wrong.

This article is for general educational purposes and does not constitute medical advice. If you have PCOS, work with a registered dietitian or your GP to develop a plan suited to your individual health history and any medications you're taking. If you're trying to conceive, consult your doctor before following restrictive eating patterns, as these may affect fertility.