If you’ve ever sought nutrition advice to manage PCOS, chances are the conversation quickly turned to weight loss. Unfortunately, this narrow focus overlooks the complex, multifactorial nature of PCOS, and the many evidence-based strategies that have nothing to do with dieting or changing your body size. Our approach focuses on the bigger picture: supporting your health through food, movement, sleep, stress, and more. We’re here to equip you with a diverse set of tools and to help you find the ones that work best for you.

What is PCOS 

Polycystic Ovary Syndrome (PCOS) is a common hormonal condition, affecting 12–21% of women of reproductive age in Australia. However, up to 70% remain undiagnosed, often living with symptoms for years before receiving support. While PCOS has no cure, symptoms can often be managed through lifestyle changes, medications, and fertility treatments.

PCOS and Diet: A non-diet approach

Food is essential to our health our bodies break it down into nutrients that help us function, heal, and thrive. Yet diet culture has led many to believe that health is achieved through cutting foods out, especially when it comes to managing PCOS. A non-diet approach shifts the focus to what you should eat if you have PCOS, supporting your body with nourishment rather than restriction.

1. Eat more fibre

Fibre is a powerhouse when it comes to managing PCOS. It helps keep blood sugar levels steady, supports digestion, and keeps you feeling satisfied between meals. Think of fibre as your body’s natural helper, as it slows down digestion, which can be beneficial for blood glucose control and cholesterol levels. (Psst, adding fibre doesn’t have to be hard, try sprinkling chia seeds on your breakfast, snacking on fruit with skin (like apples or pears), or adding a handful of legumes to your meals.

2. Add in unsaturated fats

Unsaturated fats are essential for hormone production and reducing inflammation, which is often elevated in PCOS. Incorporate monounsaturated fats like extra virgin olive oil, avocados, and nuts, as well as polyunsaturated fats found in oily fish and sunflower seeds. These fats not only support your overall health but also add flavour and satisfaction to your meals.

3. Prioritise protein

Protein plays a crucial role in managing PCOS symptoms. It helps regulate blood sugar levels, supports muscle maintenance, and keeps you feeling full and energised. Including a source of protein in each meal and snack can aid in mood stabilisation and reduce cravings.

4. Carbohydrates are not the enemy

Carbs often get a bad rap, but they are an essential part of a balanced diet, especially for those with PCOS. Focus on low-GI carbohydrates like whole grains and legumes, which release energy slowly and help maintain stable blood sugar levels. 

5. Consistent eating patterns

Eating at regular intervals, approximately every three hours, can help stabilise blood sugar levels and prevent energy crashes. This approach supports your metabolism and can reduce the likelihood of intense cravings or overeating later in the day. Your dietitian can work with you to establish a routine that fits your lifestyle.

6. Smart food pairing

Combining different macronutrients in your meals can help keep you fuller for longer and support steady blood sugar levels. Pairing carbohydrates with protein, fats, and fibre slows down digestion and provides sustained energy. For example, bread—whether white, wholegrain, or anything in between—can be paired with peanut butter, avocado, or eggs to help manage blood sugar and keep you feeling fuller for longer. It also means all foods can fit! A dietitian can help you with this planning.

The best nutrition supplements for PCOS 

Inositol

Inositol is a natural compound found in foods like fruits, grains, and nuts. It plays a key role in how the body processes carbohydrates and uses insulin. Supplements combining myo-inositol and D-chiro-inositol in a 40:1 ratio (which reflects what’s in your body) may help improve insulin sensitivity, hormone balance, menstrual cycles, and ovulation for people with PCOS. While some studies show promising results, the overall evidence is still limited, and not everyone will see the same benefits. Inositol is generally safe and well-tolerated, but it’s a good idea to chat with your healthcare provider before starting.

Omega 3

Omega-3 fatty acids are well-known for their anti-inflammatory benefits, which is particularly relevant in PCOS where chronic low-grade inflammation is common. Research has found omega-3s may help reduce triglycerides, support insulin sensitivity, and improve cholesterol balance. These findings support recent international PCOS guidelines, which highlight the importance of strategies to reduce cardiovascular risk in long-term management

Folate

Folic acid is well known for its role in supporting fertility and preventing neural tube defects during early pregnancy. Additionally, research suggests it may help reduce inflammation, oxidative stress, and insulin resistance in people with PCOS, making it a valuable supplement beyond preconception care

PCOS and insulin resistance

Insulin resistance is really common in people with PCOS, affecting people of all shapes and sizes. 

Insulin is a hormone that helps move glucose (sugar) from your bloodstream into your cells, where it’s used for energy. But when insulin resistance occurs, this process doesn’t work as well. It’s like the “key” (insulin) is a bit rusty and struggles to unlock the door. Even though insulin and glucose are present, your cells aren’t getting the energy they need, which can leave you feeling tired, hungry, and frustrated.

In PCOS, high insulin levels can also increase androgen (testosterone) production, which may worsen symptoms like irregular cycles, acne, or excess hair growth.

The good news? Nutrition can support insulin sensitivity, without restriction. Eating regularly, building balanced meals, and working with a dietitian to explore what feels good in your body can all help support more stable blood glucose levels and energy throughout the day.

Why weight loss and dieting advice is SO unhelpful for people with PCOS 

If you’ve been told that weight loss is the key to managing your PCOS, you’re not alone, but the evidence tells a more complex story. PCOS is a multifactorial hormonal condition, and weight is not the root cause.

Yes, insulin resistance is common in PCOS, but research shows it affects people of all body sizes, not just those in larger bodies. Weight alone is not a reliable marker of insulin resistance, nor is weight loss a guaranteed fix.

Despite being a common recommendation, intentional weight loss through dieting is rarely sustained. More than 80% of individuals reportedly regain more weight than initially lost within two years of attempting weight loss. The repeated loss and regain of weight (weight cycling)  has been linked to increased risks of insulin resistance, impaired glucose tolerance, and cardiovascular disease, all of which are already more prevalent in PCOS.

In addition, people with PCOS face unique hormonal challenges that impact metabolism, appetite regulation, and energy levels. These biological factors make weight loss especially difficult, and framing it as the “solution” often leads to blame and shame rather than meaningful care.

Mental health also matters: PCOS is associated with higher rates of anxiety, depression, and disordered eating. Dieting and weight-focused approaches can worsen these outcomes, increasing the risk of binge eating and body dissatisfaction.

Importantly, improvements in insulin sensitivity, cholesterol levels, menstrual regularity, and overall PCOS symptoms can occur without weight loss. That’s why leading clinical guidelines now support individualised, weight-neutral strategies that prioritise health behaviours—such as balanced nutrition, movement, sleep, and stress management—rather than the number on the scale.