Why Being Healthy Matters More Than Just Weight Loss with PCOS (now PMOS)?
This blog post also uses PMOS terminology, which stands for polyendocrine metabolic ovarian syndrome (formerly known as polycystic ovary syndrome – PCOS).
This post covers why being healthy matters more than just weight loss with PCOS (now called PMOS) and what the international PCOS guidelines actually say.
When did being healthy become the same thing as losing weight? Somewhere along the way, the conversation changed. Being “fit” wasn’t enough anymore. Being healthy wasn’t enough either. Suddenly, the goal became to be as small as possible. Tiny waists, visible collarbones, “what I eat in a day” videos featuring little more than coffee and cucumber slices. We’ve somehow ended up right back where we started.
And if you have PCOS/PMOS, that message can feel especially heavy. Because you’ve probably heard the golden one: “You just need to lose weight.” Maybe it came from your doctor. Maybe from a family member. Maybe from someone on social media who promises to “reverse” PCOS/PMOS if you just cut out carbs, gluten, dairy, sugar, and basically every food that makes life enjoyable.
After hearing it enough times, it’s easy to believe that your body is the problem, that if you could just lose enough weight, your hormones would magically fall into place. But that’s not what the science says.
What do the guidelines say about PCOS and weight loss?
According to the 2023 International Evidence-Based Guideline for the Assessment and Management of Polycystic Ovary Syndrome, the goal of PCOS/PMOS treatment isn’t to make women as thin as possible. The goal is to improve metabolic health, reproductive health, psychological well-being, and quality of life.
Those are two very different things. Weight can certainly be part of the conversation, especially when excess body fat contributes to metabolic complications. But it isn’t the whole conversation.
PCOS is more than weight loss recommedation and suggestion
One of the biggest misconceptions about PCOS/PMOS is that it’s simply a condition affecting women who are overweight. It isn’t. Firstly, PCOS/PMOS is one of the most common hormonal disorders worldwide, affecting an estimated 8–13% of women of reproductive age.
While many women with PCOS/PMOS do live with overweight or obesity, many don’t. You’ve probably heard the term lean PCOS/PMOS. These are women whose BMI falls within the “normal” range but who still experience classic PCOS/PMOS symptoms. Which tells us something important. PCOS/PMOS isn’t caused by body weight. It’s a complex endocrine and metabolic condition that affects women across the weight spectrum. No matter the number on the scale, they may experience:
- Irregular menstrual cycles.
- Elevated androgen levels.
- Ovulation problems.
- Acne.
- Excess hair growth.
- Fertility challenges.
- Insulin resistance.
Why being healthy matters more than dieting?
1. Metabolic health is more important than just PCOS and weight loss
If you’ve ever felt frustrated because someone reduced your PCOS/PMOS to a number on the scale, you’re not imagining it. The scale tells us surprisingly little. It doesn’t tell us how much muscle someone has. It doesn’t tell us where body fat is stored. It doesn’t tell us how insulin-sensitive they are. It doesn’t tell us whether they’re physically active, sleeping well, or eating a balanced diet. In other words, it doesn’t tell us much about health.
Imagine two women who both weigh 70 kilograms. One regularly strength trains, has a high proportion of lean muscle, low levels of visceral fat and excellent insulin sensitivity. The other has relatively little muscle, higher amounts of visceral fat and significant insulin resistance.
According to the scale, they’re the same. Metabolically, they’re not even close. That’s why researchers increasingly talk about body composition rather than body weight. Body composition looks at what your body is made of, not simply how much it weighs. Because two people can weigh the same while having completely different health profiles.
2. Muscle matters in PCOS
When people think about PCOS/PMOS, they usually think about hormones. Estrogen. Progesterone. Testosterone. Insulin. Rarely does anyone mention muscle. And honestly, I think that’s a mistake.
Skeletal muscle is one of the body’s largest metabolic organs. After you eat carbohydrates, approximately 80% of the glucose your body removes from the bloodstream is taken up by skeletal muscle. That means your muscles aren’t just helping you lift groceries or climb stairs; they’re playing a major role in regulating blood sugar. The healthier your muscles are, the better your body becomes at responding to insulin. And that’s incredibly important for women with PCOS/PMOS.
3. Managing and targeting insulin resistance is more important than weight loss in PCOS/PMOS
One of the defining features of PCOS/PMOS isn’t actually irregular periods. It’s insulin resistance. It’s estimated that between 65 % and 95 % of women with PCOS/PMOS have insulin resistance, depending on factors such as body weight, ethnicity, and the diagnostic criteria used.
Insulin is a hormone that helps move glucose from your bloodstream into your cells, where it can be used as energy. When your cells become less responsive to insulin, your body compensates by producing more of it. Higher insulin levels don’t just affect blood sugar. They also stimulate the ovaries to produce more androgens, including testosterone. That’s one reason insulin resistance can contribute to symptoms like:
- Irregular ovulation.
- Acne.
- Excess facial or body hair.
- Difficulty becoming pregnant.
This is why improving insulin sensitivity sits at the heart of evidence-based PCOS/PMOS management. Not because insulin is the only problem, but because it influences so many others.
What about strength training with PCOS?
If insulin resistance is one of the biggest drivers of PCOS/PMOS, it makes sense to ask: How do we improve insulin sensitivity? The answer isn’t a trendy detox and weight loss in PCOS/PMOS. It’s not cutting out entire food groups. And it’s certainly not starving yourself.
One of the most effective lifestyle strategies is surprisingly simple: Build and maintain muscle. Research consistently shows that resistance training improves insulin sensitivity, increases lean muscle mass, and reduces visceral fat in women with PCOS/PMOS.
Perhaps the most encouraging part is that these benefits often occur even when body weight changes very little. That’s an important point because so many women judge whether they’re “making progress” solely by what the scale says.
But your body can become metabolically healthier long before the scale reflects it. You might gain muscle while losing fat. You might improve your insulin sensitivity. You might lower your blood pressure. You might improve your cholesterol levels. You might start ovulating more regularly. None of those changes are visible on the bathroom scale. Yet they’re exactly the changes that matter most for your long-term health.
Instead of asking: “How can I lose another five kilograms?” Perhaps a better question is: “How can I build a healthier body?” Because weight loss and maintaining a healthy body with PCOS/PMOS aren’t always the same thing. And according to the latest evidence, that’s precisely the point.
Why having healthy body fat and weight still matters more in PCOS than just weight loss?
Now, before we all throw our scales out of the window, let me say something that sometimes gets lost in conversations like this. Weight isn’t irrelevant. It’s just not the whole story. Body fat isn’t bad. In fact, we’d be in serious trouble without it. We need body fat to produce hormones, absorb certain vitamins, protect our organs, and support reproductive health. Having body fat isn’t a sign that your body is failing you—it’s a sign that your body is functioning exactly as it’s supposed to.
The challenge isn’t having body fat. The challenge is where it’s stored. You may have heard the term visceral fat before. Unlike the fat we can pinch under our skin, visceral fat surrounds our internal organs and behaves differently. It’s metabolically active, meaning it releases substances that contribute to inflammation and insulin resistance.
Research consistently links excess visceral fat with a higher risk of type 2 diabetes, cardiovascular disease, and fatty liver disease. All conditions that women with PCOS/PMOS are already more likely to develop.
That’s why I don’t love conversations that focus solely on “weight loss and losing fat in PCOS/PMOS.” I’d much rather we talked about improving body composition, reducing excess visceral fat while maintaining—or even building. Having muscle is a completely different goal than simply becoming lighter.
What are the best recommendations for PCOS?
If you’ve ever searched “best diet for PCOS/PMOS” online, you’ve probably ended up more confused than when you started. I know I was when I started reading about it (and I’m a dietitian, so I know how confusing all the information can be). One person tells you to cut out carbohydrates. Someone else swears by keto. Another insists gluten is the problem. Then dairy becomes the enemy.
At some point, you’re left wondering whether there’s anything you’re actually allowed to eat. Instead of promoting restrictive diets or trendy wellness hacks, PCOS Guidelines focuses on sustainable lifestyle habits that improve health over time.
Move your body—but don’t punish it
The guideline recommends that women with PCOS follow the same physical activity recommendations as the general population:
- 150–300 minutes of moderate-intensity physical activity per week, or
- 75–150 minutes of vigorous activity, plus
- muscle-strengthening exercise at least two days per week.
Notice what isn’t listed. There isn’t a recommendation to exercise until you’ve “earned” your dinner. There isn’t a prescription for endless cardio. And there certainly isn’t a suggestion that you need to burn off every calorie you eat. Exercise isn’t punishment. It’s one of the most effective ways to improve insulin sensitivity, support cardiovascular health, preserve muscle and reduce long-term disease risk.
There isn’t one “perfect” PCOS diet
This might disappoint anyone looking for a miracle solution, but it’s also incredibly freeing. The current evidence doesn’t support one single eating pattern as the best diet for every woman with PCOS/PMOS and weight loss. Instead, the guideline recommends focusing on overall dietary quality. That means eating a variety of minimally processed foods, including:
- Vegetables and fruit.
- Whole grains.
- Legumes.
- Healthy fats.
- Protein-rich foods.
- Foods you actually enjoy and can continue eating long term.
I always think this is worth repeating because it’s easy to get caught up chasing the “perfect” diet. But the healthiest eating pattern is usually the one you can still imagine yourself following next year.
Sleep and mental health are also super important
This is the part we don’t talk about nearly enough. PCOS/PMOS doesn’t only affect the ovaries. It affects the whole person. People with PCOS/PMOS are approximately two to three times more likely to experience anxiety and depression than people without the condition. Sleep disturbances are also more common, and poor sleep itself can worsen insulin resistance, appetite regulation and energy levels. Looking after your mental wellbeing is part of looking after your PCOS/PMOS.
Should everyone with PCOS focus on weight loss and dieting?
This is probably the question you’ve been waiting for. And thankfully, the guideline gives us a very clear answer. No. Weight loss and dieting aren’t recommended to everyone who struggles with PCOS/PMOS. In fact, the guideline specifically recommends individualised care rather than assuming weight loss should be the goal for every woman. If you have lean PCOS/PMOS, encouraging weight loss simply doesn’t make sense.
Your treatment should focus on your symptoms, metabolic health and quality of life, not just on weight loss with PCOS/PMOS. On the other hand, if you live with overweight or obesity and excess body fat is contributing to insulin resistance or other metabolic complications, modest weight loss can absolutely be beneficial. The keyword here is modest. Research consistently shows that losing around 5–10 % of your initial body weight can improve insulin sensitivity, menstrual regularity, ovulation and cardiometabolic health. I love this finding because it challenges the idea that you need a dramatic transformation before your health starts improving. You don’t. Meaningful improvements often happen long before you reach the weight you originally thought you “had” to achieve.
FAQ about PCOS and weight loss
Can you have PCOS/PMOS if you’re of normal weight? Yes. So-called lean PCOS/PMOS is well recognised, and women with a normal BMI can still experience insulin resistance, elevated androgen levels, irregular menstrual cycles, and fertility challenges.
Is body composition more important than body weight with PCOS/PMOS? Body weight is only one measure of health. Body composition (which includes muscle mass and fat distribution) often provides a better picture of metabolic health.
Does building muscle help with PCOS/PMOS? Yes. Resistance training improves insulin sensitivity, increases lean muscle mass and supports healthy body composition, making it an important part of evidence-based PCOS management.
What is the best diet for PCOS/PMOS? There isn’t one “best” diet. Current evidence supports a balanced, sustainable eating pattern rich in vegetables, fruit, whole grains, legumes, healthy fats, and adequate protein.
Should everyone with PCOS/PMOS lose weight? No. Weight-loss recommendations should be individualised. Women living with overweight or obesity may benefit from modest weight loss, while women with lean PCOS/PMOS often have different treatment priorities.
Final thoughts before you go
If there’s one message I’d love you to take away from this article, it’s this: weight can matter, but metabolic health matters more. That’s exactly what the current evidence tells us.
For some women with PCOS/PMOS, improving health will include losing weight. For others, it won’t. But every woman can benefit from building sustainable habits that support her hormones, metabolism and long-term wellbeing. Building muscle. Moving regularly. Eating nourishing foods. Sleeping enough. Managing stress. Looking after your mental health.
Those aren’t glamorous solutions. They’re not quick fixes. But they’re the recommendations that have stood up to years of scientific research.
How do you maintain a healthy body for your PCOS/PMOS? Let me know in the comments.
