By Kym Campbell, BSc. | Updated September 15th, 2022

PCOS affects between 4-20% of women worldwide. More than half of these women are classified as overweight [1]. The best diet for PCOS weight loss addresses the two primary mechanisms that cause PCOS weight gain. Chronic inflammation and insulin resistance.

This is why women see such great results during my free 30-Day PCOS Diet Challenge.

In this article, I share nine evidence-based tips that define the best diet for PCOS weight loss. For help putting these ideas into practice, you can download this accompanying free 3-Day Meal Plan.

 
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Knowing which foods to eat with PCOS is a big part of the battle. That’s why I’ve also prepared this PCOS Diet Cheat. This one-page printout contains over 180 PCOS-friendly foods and drinks.

1. Restricting Calories Isn’t the Answer

Many people mistakenly think that restricting calories is key to PCOS weight loss. Yet, studies show that for the majority of people, caloric restriction leads to weight gain over the long term [2].

The calories in vs calories out model of weight loss isn’t helpful. It’s an oversimplification of a complex problem that creates “failed dieters”.

The reality is that PCOS women gain weight easier than other people [6]. This isn’t because they eat too much, or don’t get enough exercise. Studies show that this hypothesis is wrong [3]. It’s because of inflammation and poor insulin regulation [4-10]. When it comes to diet, what you eat is much more important than your caloric intake.

This is what I show people during my free 30-Day PCOS Diet Challenge. You can eat until you’re comfortably full and still lose weight with PCOS.

“I don’t count calories/macros or account for what I’ve eaten because I’m now able to pay attention to the cues my body sends me in terms of when I’m hungry, when I’m full, and when something bothers me.” LeeAnne Soule. Lost 65 Lbs and fixed her period.

Rather than focusing on how much you eat, here’s what you need to do instead. If you want to know the best way to lose weight with PCOS follow these steps.

2. Manage Your Blood Sugar Levels

The reason that the majority of women with PCOS are overweight is because of insulin resistance. This is a condition where your insulin levels remain high for too long. Insulin causes body fat storage.

Insulin levels rise in response to your blood sugar levels. The best way to prevent elevated insulin is to keep your blood sugar levels low too.

Most doctors will tell you that a peak blood sugar level below 140 mg/dL (7.8 mmol/L) is within normal ranges. But if you’re consistently hitting this level, then you won’t lose weight. Even if you’re heavily restricting calories.

Women with PCOS that want to lose weight need to keep their post-meal blood sugar levels below 110 mg/dL (6.1 mmol/L).

Optimal fasting levels should be between 72 – 85 mg/dL (4.0 – 4.7 mmol/L). This is significantly lower than standard recommendations of < 99 mg/dL (5.5 mmol/L). The best way to achieve good blood glucose levels is by following the steps below.

3. Get Your Macros Right

Macros are the new calories for weight loss. The idea here is that the relative proportion of macronutrients in your diet is key to managing body weight. This is because macros influence blood sugar levels. Over time, that means lower insulin and less body fat.

The USDA recommends the following macros for the average adult [11]: 10-35% protein, 20-35% fat, 45–65% carbohydrate.

For women with PCOS, this macro balance is likely to cause weight gain.

I recommend a diet that’s roughly 20% protein, 60% fat, and 20% carbohydrate. This is low-carb by most standards, but not ketogenic. As I explain here, I don’t recommend the keto diet for PCOS.

I provide a full accounting of macros for PCOS here. The key take home is that the best way to lose weight with PCOS is to eat more fat and fewer carbs. Doing so improves insulin regulation which leads to a reduction in body fat.

The balance of macros is more important than how many calories you consume.

4. Limit Carbs

For most people, getting your macros right means reducing sugar intake. Bringing your sugar intake down as low as is reasonably practical is the most important step for losing weight with PCOS.

Modifying your intake of other carb-rich foods is also key. You want to eat slow-carb and low-carb, from whole food sources. This means black rice, quinoa, beans, and starchy vegetables are all fine to enjoy. But you want to limit serving sizes to around 25 grams of net carbohydrates per meal.

You’ll find this amount of carbs in:

  • ½ cup of cooked rice or quinoa
  • ¾ – 1 cup of cooked beans or lentils
  • A medium-sized sweet potato
  • 2 ½ cups of starchy vegetables such as carrots, beetroot, butternut, or acorn squash
  • 1 cup or 1 medium-sized piece of fruit

The recipes I share in my free 30-Day PCOS Diet Challenge follow these guidelines.

Other carb-rich foods are likely to make weight loss harder. This is especially true if the foods have a high glycemic index. Pasta, bread, snacks, and cereals are the worst offenders within this group.

5. Make Peace with Fat

The flip side of a low-carb PCOS diet, is you need to eat more fat. This can be scary for women that dieted a lot in the past.

This fear is often driven by decades of misinformation promoted by health authorities. Saturated fats have had a particularly hard time in the past. But the weight of evidence now shows that saturated fat doesn’t increase heart disease risks [28]. Experts argue that the US Dietary Guidelines recommendation to limit saturated fats, ‘lacks scientific rigor [29].’

From a practical perspective, you only need to look at the success of ketogenic diets for driving weight loss. I don’t support the use of a keto diet for PCOS. But it shows how dietary fat doesn’t make you fat.

There’s other compelling evidence showing that the right kinds of fats improve weight loss:

  • Fat consumption has a positive effect on satiety and appetite [21].
  • Some of the fats found in beef and lamb increase insulin sensitivity [22, 23], and reduce body fat [24, 25].
  • Coconut products contain medium-chain triglycerides. These fats promote fat loss from the stomach and thigh areas [26, 27].

6. Eat More Meat, Fish, & Eggs

Getting more protein also helps with PCOS weight loss. According to an article published in the American Journal of Clinical Nutrition [30], dietary protein:

  • Increases satiety to a greater extent than carbohydrate or fat consumption.
  • Helps you burn calories by increasing heat production.
  • Favors the retention of muscle mass over fat.

In my experience, most women with PCOS don’t get enough protein. Achieving a 20% protein macro percentage requires a concerted effort. For someone on 2,000 calories per day, this means consuming 100 g of protein. That’s the equivalent of 16 oz (450 g) of lean meat per day (weighed raw). In vegetarian terms, this is the equivalent of 22 oz (620 g) of tofu.

One of the big challenges with vegetarian-derived protein is that it usually comes with a lot of carbohydrates. Beans for example are around 20% protein. That’s pretty good. But they’re also around 60% carbs. These kinds of carbs are fine. But if you try to meet your protein requirements with them, your carb balance will be too high. And that won’t help with weight loss. This is why I recommend that women with PCOS eat more meat, fish, and eggs.

Animal-derived proteins are also more bioavailable. This means your body can better absorb them.

7. Enjoy High Fiber Foods

This one seems super boring but stay with me.

Remember how I said that women with PCOS gain weight more easily than others? Well, studies show that PCOS women with insulin resistance consume less fiber [32]. This is a big problem because fiber helps with insulin resistance [34]. Other studies show that small reductions in dietary fiber intake increase abdominal fat [33].

So, while you’re probably sick of hearing about it. The best diet for PCOS weight loss includes plenty of high-fiber foods.

I include many of these foods in my PCOS Diet Cheat Sheet.

Some of the best high-fiber vegetables for PCOS are garlic, artichoke, carrots, broccoli, and sweet potato. Lentils, beans, and peas are also excellent (as everyone knows). Nuts and seeds though are the richest source of dietary fiber. Chia seeds for example contain around 34% fiber.

You can see I use these ingredients a lot. The recipes I’ve prepared in my 3-Day Meal Plan and 30-Day PCOS Diet Challenge feature many of these foods.

8. Stop Inflaming Your Gut

The six steps above are good for PCOS weight loss because they help overcome insulin resistance. But chronic inflammation is another primary driver of PCOS-related weight gain.

Improving insulin regulation reduces this problem. But there are other ways that foods add fuel to an already out-of-control fire.

Industrial seed oils are pro-inflammatory. These include all your regular vegetable oil products from soy, corn, cotton seed, canola, sunflowers, etc.

The fructose found in most sweeteners is also pro-inflammatory [12, 13]. Excess fructose can damage the intestinal barrier letting toxins enter the blood [14].

A similar phenomenon occurs with gluten-containing foods. Lab studies have found that gluten increases intestinal permeability, even in healthy people [15]. I’ve written at length about PCOS and gluten and why it’s important to avoid this food. I also have an article describing the nuances of PCOS and dairy. Much like gluten, avoiding dairy is a powerful way to reduce inflammation.

Reducing inflammation and healing the gut is key to managing PCOS. That’s why all the recipes in my free 30-Day PCOS Diet Challenge and 3-Day Meal Plan are gluten-free, dairy-free, and low in sugar. The benefits speak for themselves.

9. Stay On Top of Your Micronutrients

The best diet for PCOS weight loss goes beyond getting the right macronutrient balance. Micronutrients are important too.

There are many vitamins and minerals that affect body weight and insulin resistance. These include zinc [16], calcium + Vitamin D [17], carnitine [18], selenium [19], and chromium [20].

Using birth control for PCOS increases the risk of nutrient inadequacies [21-23]. Taking metformin for PCOS depletes B12 levels [24]. Because these pharmaceuticals are widely used “off-label”, they present an added hazard for the PCOS community.

In many cases, it makes sense to consider dietary supplements as part of any PCOS natural treatment plan. Vitamin D for PCOS is one of the most obvious candidates.

But the best way to stay on top of your micronutrients is to eat a lot of non-starchy vegetables. They contain minerals and vitamins in a bioavailable form. Many also contain phytonutrients with antioxidant and anti-inflammatory effects. That’s nothing but helpful for weight loss and insulin regulation [25, 26].

Foods to Eat

The best foods to eat to lose weight with PCOS are aligned with the 8 steps described above.

Protein

  • Beef, chicken, and pork
  • Fish and seafood
  • Eggs

Fats

  • Olive oil
  • Animal protein (see above)
  • Avocado
  • Coconut products
  • Walnuts
  • Almonds
  • Chia seeds
  • Flax seeds
  • Other nuts and seeds

Carbohydrates

  • Black/red/wild rice
  • Quinoa
  • Beans, peas, and lentils
  • Starchy vegetables

Fiber Rich Vegetables

  • Garlic
  • Onion
  • Artichoke
  • Asparagus
  • Carrots and beetroot
  • Cabbage
  • Fennel bulb
  • Sweet potato

Nutrient-Rich Non-Starchy Vegetables

  • Swiss chard, kale, spinach, and other leafy greens
  • Tomatoes, eggplant, and peppers
  • Cauliflower and broccoli
  • Cucumber and zucchini

Healthy Treats

Download this free PCOS Diet Cheat Sheet for a longer list of foods to eat.

Foods To Avoid

The following examples are common foods for PCOS weight loss that are best avoided.

Learn more about the seven foods to avoid with PCOS here and download this free PCOS foods to avoid list.

Other Lifestyle Changes

Other lifestyle changes can further enhance weight loss results from dietary changes.

Intermittent fasting, for example, improves metabolic health and drives weight loss [27, 28]. The health benefits of limiting eating to within an eight-hour window have been demonstrated in women with PCOS [29].

Improving sleep is also key to PCOS weight loss. Poor quality sleep is associated with increased markers of systemic inflammation [30]. Studies have shown that inadequate sleep is also a recipe for making poor food choices. This is because sleep quality influences eating habits and preferences for sugary foods [31, 32].

Exercise can also help. Studies have shown how physical activity improves insulin sensitivity and body composition in women with PCOS [33, 34]. Both aerobic exercise and resistance training have been shown to help women with PCOS [35, 36].

The Bottom Line

The best way to lose weight with PCOS is to change how you eat. Rather than restrict calories, follow a PCOS diet for sustainable weight management. Achieving steady blood glucose levels is key. This is why it’s important to get your macronutrient balance right. Improving gut health and reducing inflammation provide another way that diet can help with PCOS weight loss.

To start putting a PCOS diet into practice, download my free 3-Day Meal Plan. You can also sign-up for my next free 30-Day PCOS Diet Challenge here.

Ready To Take Action?

  • Join my next free 30-Day PCOS Diet Challenge here. This is a live program where you’ll receive weekly meal plans and helpful video lessons. You’ll also be part of a motivated and inspiring community of like-minded women.
  • Download my free 3-Day PCOS Diet Meal Plan here. This is perfect for getting started before the next 30-Day Challenge begins.
  • Join my PCOS Monthly Meal Planning Service here. This service includes hundreds of PCOS recipes within a pre-populated, yet customizable meal plan. It’s designed to save you time and help you apply a PCOS diet.
  • Sign up for my next Beat PCOS 10-Week Program. This is a comprehensive live program that runs quarterly. Topics covered include diet, PCOS-centric emotional eating, exercise, stress management, and more. The 10-Week Program includes the same recipes and meal plan as my monthly meal planning service.
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