Mediterranean Diet for PCOS

Studies of women with PCOS show reductions in HOMA-IR of roughly 15 to 25 percent after three to six months on a closely followed Mediterranean pattern, comparable to the effect of metformin in mild cases. The combination of monounsaturated fat, fiber from legumes and vegetables, and low-glycemic carbohydrates stabilizes post-meal glucose and insulin. Daily olive oil use and two to three fish meals per week appear to be key drivers. Pair the diet with 150 to 225 minutes of moderate activity weekly for compounded benefits.

Yes. Randomized trials report 3 to 5 kg of weight loss at six months on a Mediterranean plan without calorie counting, driven by high satiety from fiber and protein and lower intake of ultra-processed foods. For faster results, moderate portion sizes of grains and nuts and track total calories for the first four weeks to calibrate your personal intake. Even a 5 percent weight reduction can restore ovulation in women whose PCOS is driven by insulin resistance.

Target two to three fish meals per week, including at least one oily fish serving for EPA and DHA. A 100 g cooked salmon fillet supplies about 2,000 mg of EPA and DHA per USDA data. Omega-3s lower inflammatory markers and may reduce testosterone in women with PCOS. If you do not eat fish, algae-based EPA and DHA supplements of 250 to 500 mg daily offer a similar effect. Avoid high-mercury fish like king mackerel, tilefish, shark, and swordfish.

Mediterranean eating includes moderate dairy, typically yogurt and cheese rather than milk. For most women with PCOS, plain full-fat or low-fat dairy is well tolerated. A subset experiences worsening of acne or cyclic bloating with dairy; if you fall in that group, trial four weeks without dairy and compare symptoms. Greek yogurt supplies about 17 g protein and 200 mg calcium per cup per USDA data. Sheep and goat dairy are sometimes tolerated when cow dairy is not.

A well-built Mediterranean plan supplies most micronutrients, but two supplements have good evidence for PCOS. Inositol in a 40 to 1 myo to d-chiro ratio improves ovulation rates in multiple trials. Vitamin D is commonly low; aim for 30 ng per mL or higher on a 25-hydroxy blood test, which may require 1,000 to 2,000 IU daily. Omega-3 supplementation is reasonable if you do not eat fish. Consult your physician or a registered dietitian before starting supplements.