PMOS Myth-busting: What Does the Science Really Say?
PMOS, previously known as PCOS, is one of the most common endocrine conditions affecting women, yet it remains surrounded by misinformation. Search online and you may be told that you need to lose weight, stop eating carbs, exclude dairy and gluten, take a pricey supplement, or identify your exact “type” of PMOS before you can improve your health.
Some of these ideas contain a grain of science. Others are misleading. And some can make an already complicated condition even harder to navigate.
So, for PMOS Awareness Month, let's look at what the evidence actually tells us.
Myth 1: You need ovarian cysts to have PMOS
Despite the old name, you do not need ovarian cysts to have PMOS. In fact, what have traditionally been described as “cysts” are actually numerous small ovarian follicles rather than cysts in the usual medical sense.
In adults, diagnosis generally requires two of three features: ovulatory dysfunction, clinical or biochemical androgen excess, and polycystic ovarian morphology on ultrasound or elevated AMH where appropriate. This means someone can have irregular periods and androgen excess and meet the diagnostic criteria without having polycystic ovaries at all.
Equally, an ultrasound showing polycystic ovarian morphology does not automatically mean someone has PMOS.
Myth 2: PMOS only affects women who are overweight
PMOS can occur at any body size. Higher body weight can worsen insulin resistance and some metabolic features in susceptible individuals, but it does not cause PMOS.
Insulin resistance can also occur in women with a BMI within the healthy range. The Monash International Evidence-Based Guideline specifically states that women with PMOS have an increased risk of impaired glucose tolerance and type 2 diabetes regardless of age or BMI.
Myth 3: You need to cut out carbohydrates
Carbs have acquired a particularly bad reputation in the PMOS world because of the relationship between glucose, insulin and insulin resistance.
But having insulin resistance does not mean carbohydrates need to disappear from your diet altogether.
The international guideline concludes that there is no evidence that one particular macronutrient composition is superior for everybody with PMOS. What we eat alongside carbohydrates, the amount we eat, how processed they are, and our overall dietary pattern all influence the glucose response.
There is a considerable nutritional difference between a sugary drink and a meal containing lentils, vegetables and wholegrains, yet all contain carbohydrate.
Myth 4: Everyone with PMOS should give up gluten and dairy
There is currently no recommendation in the international PMOS guideline for routine gluten or dairy exclusion.
Someone with coeliac disease needs to avoid gluten. Someone with lactose intolerance may benefit from adapting their dairy intake. Food allergy or other gastrointestinal conditions may require individual dietary changes.
But that is completely different from saying gluten or dairy causes PMOS.
Unnecessary exclusion can also reduce dietary variety and make it harder to obtain nutrients such as fibre, calcium, iodine and protein, depending on what foods are removed and how they are replaced.
Your diet should be personalised because of your health needs, not because everybody with PMOS has been given the same prohibited-food list.
Myth 5: Losing weight will cure PMOS
Weight loss may improve metabolic and reproductive outcomes for some women living with excess weight, but weight loss is not a cure for PMOS.
PMOS also occurs in lean women, and the underlying genetic and endocrine susceptibility does not disappear because somebody reaches a particular number on the scales.
Importantly, the international guideline recognises that healthy lifestyle changes have benefits even in the absence of weight loss.
Physical activity can improve insulin sensitivity. Resistance training can support muscle and glucose disposal. A nutritious diet can improve diet quality and cardiometabolic health. Better sleep and stress management may influence metabolic and psychological wellbeing.
Those changes have value even when somebody's weight remains stable.
The guideline also specifically calls upon healthcare professionals to recognise and minimise weight stigma in PMOS care.
Myth 6: There are four root-cause types of PMOS
You may have seen quizzes telling you that you have “insulin-resistant PCOS”, “adrenal PCOS”, “inflammatory PCOS” or “post-pill PCOS”.
This is not an internationally recognised diagnostic classification.
There are recognised PMOS phenotypes based on different combinations of ovulatory dysfunction, hyperandrogenism and polycystic ovarian morphology.
And there is absolutely biological variation within PMOS. Insulin resistance may be particularly prominent in one person. Another may have significant adrenal androgen production. Inflammation, stress physiology, sleep and metabolic health can vary considerably between individuals.
But these systems also interact. They do not divide neatly into separate boxes.
For example, somebody may have insulin resistance, raised adrenal androgens, and increased inflammatory signalling simultaneously.
Understanding individual drivers can be useful. Believing that everyone belongs to one simple “root cause type” is less helpful.
Myth 7: A supplement can “balance your hormones”
If only it were that simple.
Supplements including inositol, vitamin D, omega-3 fatty acids, NAC and various herbal products are widely promoted for PMOS.
Some have interesting evidence, but the quality and consistency of that evidence vary considerably.
Supplements can form part of an individualised programme, but they should not replace assessment of nutrition, sleep, physical activity, metabolic health or appropriate medical care.
Myth 8: PMOS only matters if you want to get pregnant
This may be the most damaging misconception of all.
PMOS is a leading cause of ovulatory infertility, but fertility is only one part of the condition.
Women with PMOS have increased risks relating to impaired glucose tolerance and type 2 diabetes, cardiovascular risk factors, obstructive sleep apnoea and endometrial health. Anxiety, depression, body-image distress and disordered eating are also considerably more common.
This is why modern PMOS care should consider metabolic, cardiovascular, psychological and sleep health as well as periods and fertility.
Nobody should be told to simply “come back when you want a baby”.
Myth 9: If you have PMOS, you won't be able to get pregnant
PMOS can make conception more difficult, particularly when ovulation is irregular or absent.
But PMOS does not mean infertility is inevitable.
Some women with PMOS ovulate regularly, while others ovulate intermittently. Many conceive naturally, and effective fertility treatments are available when help is needed.
If pregnancy is a goal, improving preconception health is worthwhile, but women should also know that they have evidence-based treatment options rather than feeling that PMOS has removed the possibility of motherhood.
Myth 10: Perhaps the biggest myth: there is one answer for everyone
If there is one message to take away from PMOS Awareness Month, it is that PMOS affects every woman differently.
That means good PMOS care should not begin with: “Everyone with PCOS needs to do this.”
It should begin with: “What is happening for you?”
But there is a growing evidence base that can help us understand the condition, identify individual priorities and make informed decisions about long-term health. And that is far more useful than another list of foods you're apparently never allowed to eat again.
Herby Salmon with Roasted Tomatoes, Aubergine and Lentils
Healthy eating for PMOS does not need to mean cutting out carbs, following complicated food rules or cooking a completely separate “hormone-balancing” meal.
In fact, one of the most useful approaches is often much simpler: build meals around good-quality protein, plenty of vegetables, fibre-rich carbohydrates and healthy fats.
This colourful salmon traybake does exactly that.
It combines oily fish with lentils, aubergine, tomatoes, peppers, herbs and extra virgin olive oil to make a satisfying Mediterranean-style meal that delivers protein, fibre, omega-3 fats and a wide range of plant nutrients.
And because almost everything cooks in one roasting dish, it is very easy to make.
Herby Salmon with Roasted Tomatoes, Aubergine and Lentils
Serves 4
Ingredients
To serve
Method
A useful template for other meals
One reason I like this recipe is that you can use the same basic formula well beyond this particular dish.
Think:
protein + fibre-rich carbohydrate + plenty of vegetables + healthy fats + flavour.
For example, that could be chicken with chickpeas and roasted vegetables, tofu with edamame and brown rice, or eggs with beans, vegetables and avocado.
There does not need to be anything exotic about eating well with PMOS.
Rather than asking whether an individual food is “good” or “bad for your hormones”, it can be much more helpful to look at the whole meal.
Those are far more useful questions than trying to follow an ever-growing list of PMOS food rules.
If you like this recipe, why not check out more PMOS-friendly recipes in our Recipe Index.
How to Prepare for Your GP Appointment
If you think you may have PMOS, making that first GP appointment can feel surprisingly difficult.
Perhaps your periods have always been irregular. Maybe you have developed acne, facial hair or thinning hair. Perhaps you are struggling with fertility, weight changes or fatigue. Or you may simply have a collection of symptoms that nobody has yet connected.
Preparing beforehand can help you use your appointment well and give your GP a clearer picture of what has been happening.
This does not mean arriving with a self-diagnosis or demanding a long list of blood tests. It means being able to describe your symptoms, menstrual history and wider health clearly so that you and your doctor can decide what needs investigating.
Before your appointment: write down your symptoms
PMOS can affect much more than periods, so think about the whole picture.
Make a note of any symptoms you have experienced, including:
You do not need to have all of these to have PMOS.
Also note when symptoms started and whether they have changed. Gradual facial hair growth over several years, for example, gives your doctor different information from very rapid new hair growth accompanied by other marked hormonal changes.
Take your menstrual history with you
Your cycle history is particularly useful because one of the main diagnostic features of PMOS is ovulatory dysfunction.
If possible, make a note of:
A period-tracking app can be useful, but a simple calendar or written record works just as well.
If you have gone for long periods without menstruating, tell your GP. Infrequent periods matter not only for diagnosis but because prolonged untreated amenorrhoea can increase the risk of endometrial hyperplasia.
Tell your GP about medication and contraception
This is especially important if you take the combined oral contraceptive pill or another hormonal treatment.
Hormonal contraception can change androgen production and increase sex hormone-binding globulin, or SHBG, making biochemical assessment of androgen excess more difficult.
That does not mean you should stop contraception yourself before your appointment.
Instead, tell your GP exactly what you are using, how long you have used it and what your periods and symptoms were like before you started. If hormonal testing is necessary, your doctor can advise whether medication affects the interpretation and what the safest next step should be.
Bring a list of other medicines and supplements too.
Family history can provide useful clues
PMOS has a strong genetic component, so tell your GP if your mother, sisters or other close relatives have PMOS or similar symptoms.
It is also useful to mention a family history of type 2 diabetes, gestational diabetes or cardiovascular disease, because PMOS is associated with increased metabolic risk.
And if you have previously had gestational diabetes yourself, make sure this is included.
What is your GP actually looking for?
PMOS is not diagnosed by one blood test. In adults, diagnosis is generally based on finding at least two of three features after other possible explanations have been excluded:
Ovulatory dysfunction, usually demonstrated by irregular or absent menstrual cycles.
Clinical or biochemical hyperandrogenism, meaning physical signs, such as acne or facial hair, or laboratory evidence of increased androgen activity.
Polycystic ovarian morphology, assessed by ultrasound, or raised AMH where appropriate.
If irregular cycles and hyperandrogenism are already present, an ultrasound or AMH measurement may not be necessary.
This is why simply asking for an ovarian scan is not the best way to investigate suspected PMOS. You can have PMOS without polycystic-looking ovaries, and you can have polycystic ovarian morphology without having the syndrome.
What blood tests might be considered?
Exactly which tests are appropriate will depend on your symptoms, age, medication and medical history.
To investigate biochemical hyperandrogenism, the international guideline recommends total and free testosterone, with calculated free testosterone or the Free Androgen Index commonly used in assessment.
If testosterone is not elevated but androgen excess is still suspected, other androgens such as androstenedione or DHEAS may sometimes provide additional information.
Your GP may also investigate other conditions that can produce similar symptoms. Depending on your individual presentation, this can include thyroid dysfunction, raised prolactin and non-classic congenital adrenal hyperplasia. This differential diagnosis is important. Irregular periods, acne, hair growth and hair loss are not exclusive to PMOS.
If androgen levels are markedly elevated, or symptoms such as hirsutism or virilisation have developed rapidly, further investigation may be needed to exclude less common causes.
Don't forget metabolic health
One of the biggest changes in our understanding of PMOS is recognising that assessment should extend beyond reproductive hormones.
Women with PMOS have an increased risk of impaired glucose tolerance and type 2 diabetes regardless of age or BMI.
The 2023 international guideline recommends assessing glycaemic status at diagnosis. A 75g oral glucose tolerance test, or OGTT, is considered the most accurate method of assessing glycaemic status in PMOS. If an OGTT cannot be performed, fasting glucose and/or HbA1c may be considered, although they are less accurate in this population.
This is worth knowing because a normal body weight does not automatically mean that metabolic screening is unnecessary.
Current international guidance also recommends assessing cardiovascular risk factors. This includes a lipid profile at diagnosis and blood-pressure assessment, with future monitoring depending on individual risk.
So, if the conversation focuses entirely on your periods, it is reasonable to ask: “Do we also need to consider my metabolic health?”
What about insulin testing?
This is an area where there is considerable confusion online. Insulin resistance is an important part of PMOS physiology, but the international guideline does not currently recommend routinely available insulin assays for diagnosing or monitoring insulin resistance in everyday clinical practice because currently available measures are not sufficiently accurate or standardised.
That may seem contradictory, particularly when insulin plays such an important biological role in PMOS. The distinction is that insulin resistance is mechanistically important, but routine clinical insulin measurements do not yet provide a sufficiently reliable diagnostic measure of it.
This is why the guideline concentrates on assessing glycaemic status and wider metabolic risk.
Tell your GP what matters most to you
PMOS management should not revolve solely around fertility.
You might be most concerned about facial hair. It might be acne.
You might want to understand why your cycles have disappeared.
You might be trying to conceive.
Or perhaps your greatest concern is fatigue, weight changes, anxiety or your future risk of diabetes.
Say this.
The international guideline specifically emphasises person-centred care and recognises the significant effects PMOS can have on quality of life, body image and psychological wellbeing.
PCOS/PMOS Explained: More Than Just Period Problems
If you have ever been told that PCOS is simply a problem with periods, fertility or “cysts on the ovaries”, you have only been given part of the picture.
In May 2026, polycystic ovary syndrome, or PCOS, was officially renamed Polyendocrine Metabolic Ovarian Syndrome, or PMOS. The new name was chosen after an extensive international process involving researchers, healthcare professionals and people living with the condition.
It reflects something increasingly important in our understanding of PMOS: this is a complex endocrine and metabolic condition involving far more than the ovaries. PMOS can affect menstrual cycles and fertility, but it can also influence insulin regulation, androgen production, skin and hair, cardiovascular health, sleep, mental health and longer-term metabolic health.
Understanding those connections can make PMOS feel considerably less mysterious.
What is PMOS?
PMOS is a syndrome, meaning that it describes a collection of features rather than one single symptom. Around one in eight women are thought to be affected worldwide, but PMOS does not look the same in everybody.
Symptoms can include:
Some women experience many of these. Others have only a few. Importantly, you can have PMOS in a smaller body, have PMOS without acne, and have PMOS without the ultrasound appearance traditionally described as “polycystic ovaries”.
How is PMOS diagnosed?
In adults, current international guidance generally requires two of three features, once other possible causes have been excluded:
If both irregular cycles and hyperandrogenism are already present, ultrasound or AMH testing may not be required. And despite the old name, these are not ovarian “cysts” in the usual medical sense. They are numerous small follicles.
Diagnosis in teenagers is approached differently because irregular cycles and acne can both occur normally during puberty.
But what actually drives PMOS?
This is where PMOS becomes much more interesting.
There is no single cause. Genetics clearly contribute, but researchers increasingly understand PMOS as the result of interacting hormonal and metabolic pathways.
These can include:
These systems influence one another, potentially creating reinforcing biological loops.
Insulin: not simply a blood sugar issue
Insulin is one of the most important hormones to understand in PMOS.
After we eat foods containing carbohydrate, glucose enters the bloodstream and the pancreas releases insulin. Insulin helps move glucose into cells where it can be used for energy or stored.
With insulin resistance, cells do not respond as effectively to insulin. The pancreas therefore often compensates by producing more. This can result in hyperinsulinaemia or higher circulating insulin levels.
But insulin does far more than manage blood glucose. Higher insulin levels can stimulate ovarian theca cells to produce more androgens. It can also reduce the liver's production of sex hormone-binding globulin, or SHBG, which means more testosterone remains biologically available. The result can be greater androgen activity, which contributes to acne, facial or body hair growth, weight gain, scalp hair thinning, and disruption of normal follicle development and ovulation.
Higher androgen levels may alter body fat distribution and adipose tissue function and contribute to poorer insulin sensitivity. So, we can begin to see a feedback loop between insulin and androgens, rather than one hormone being solely responsible.
Androgens don't only come from the ovaries
Another commonly overlooked part of PMOS is the adrenal glands. Androgens, such as testosterone, are often associated with ovarian production, but the adrenal glands also produce androgen precursors including DHEA and DHEAS. And research suggests that approximately 20–30% of women with PMOS demonstrate excess adrenal precursor androgen production.
The adrenal glands form part of the body's hypothalamic-pituitary-adrenal, or HPA, axis, which coordinates our physiological stress response. Research has identified altered HPA-axis and stress responsiveness in some women with PMOS.
This gives us another potential connection between stress physiology, adrenal hormone production and androgen symptoms.
What about chronic stress?
Stress is often discussed too simplistically. Cortisol is not a “bad hormone”. We need it to wake up in the morning, maintain blood pressure, mobilise energy and respond appropriately to threats and demands.
Problems really arise when the stress response is activated frequently without adequate recovery.
Cortisol and other stress hormones help make energy available by increasing glucose availability. In the short term, this is useful. Persistently altered stress physiology, however, can interact with insulin sensitivity, appetite regulation, visceral fat deposition, and sleep.
This does not make stress the cause of PMOS, but it does make stress biologically relevant rather than simply an issue of emotional wellbeing.
And there is another important relationship here: PMOS itself can be stressful.
Unpredictable periods, fertility concerns, acne, unwanted hair growth, weight stigma, and years of feeling unheard can create significant psychological stress. Anxiety and depressive symptoms are also considerably more common in women with PMOS.
So again, the relationship may run in both directions.
Where does inflammation fit?
Low-grade inflammation is another important part of the PMOS picture. Inflammation is an essential part of normal immune function. The problem is not inflammation itself, but persistent low-grade inflammatory signalling.
Research has consistently found higher levels of several inflammatory markers in women with PMOS, although body composition and other metabolic factors can contribute. Inflammatory signalling can interfere with insulin signalling, potentially worsening insulin resistance.
Studies have also linked inflammation and oxidative stress with circulating androgen levels, while experimental work has shown that suppressing inflammation and oxidative stress may reduce ovarian androgen hypersecretion.
At the same time, insulin resistance, visceral adipose tissue and androgen excess can themselves encourage inflammatory signalling.
Once again, we have a potential feedback loop.
Inflammation may worsen insulin signalling. Higher insulin may increase ovarian androgen production. Androgen excess and changes in adipose tissue (fat tissue) may then contribute to further metabolic and inflammatory dysfunction.
Why does all this matter?
Because PMOS should never be treated as though the only important questions are: “Are your periods regular?” and “Do you want to get pregnant?”.
Current international guidance recognises increased risks relating to glucose regulation, type 2 diabetes, cardiovascular risk factors, obstructive sleep apnoea, endometrial health and psychological wellbeing.
This does not mean that somebody with PMOS will inevitably develop these conditions. But it does mean there are good reasons to think beyond reproductive symptoms and look at the whole person.
What can we do about it?
There is no single PMOS diet, and current evidence does not show that everyone with PMOS needs to follow one particular dietary pattern.
Instead, nutrition and lifestyle strategies should be individualised.
Depending on the person, priorities might include improving overall diet quality, supporting healthy glucose and insulin regulation, eating adequate protein and fibre, incorporating a diverse range of plant foods, moving regularly, including resistance exercise, improving sleep and addressing chronic stress.
And importantly, the international guideline recognises that healthy lifestyle changes can produce benefits even without weight loss.
The Gut–Skin Axis in PCOS / PMOS
Skin problems can make it feel as though something is going wrong on the surface. But it’s important to remember that the skin does not operate in isolation. It communicates continually with the immune system, nervous system and endocrine system. It also responds to signals influenced by sleep, stress, blood sugar regulation, nutrient status and the trillions of microorganisms living in the digestive tract.
This network of communication is often described as the gut–skin axis.
It is an exciting area of research, particularly for people with polycystic ovary syndrome (PCOS), now also known as polyendocrine metabolic ovarian syndrome or PMOS. Both acne and PMOS are associated with changes in inflammation, insulin signalling and microbial communities.
However, the gut–skin axis is also easily oversimplified. Online, acne may be presented as proof of “leaky gut”, candida, parasites or a poorly functioning liver. People may then be encouraged to purchase ‘gut detox’ protocols, probiotic supplements, or highly restrictive diets.
The science does not currently support such a simple explanation.
Research suggests that the gut, hormones, metabolism and skin may influence one another. Understanding what the evidence does and does not show can help you support your digestive and skin health without becoming trapped in another restrictive wellness plan.
How Gut Health Influences Skin
The digestive tract is home to a vast community of bacteria, viruses, fungi and other microorganisms. Together with their genes and the substances they produce, these organisms form the gut microbiome.
The microbiome helps break down parts of food that human digestive enzymes cannot fully process. It also produces metabolites that can interact with the intestinal lining, immune system, liver, brain and metabolic tissues. These effects are not confined to the gut.
One important example is the production of short-chain fatty acids, including acetate, propionate and butyrate. Certain intestinal bacteria make these compounds when they ferment dietary fibres. Short-chain fatty acids help provide energy for cells lining the colon and are involved in maintaining the intestinal barrier. They also interact with immune cells and metabolic signalling pathways. In this way, substances produced in the bowel may influence systems far beyond it, potentially including the skin.
This does not mean that microbial metabolites travel directly to a spot on your chin and cause or cure it. The relationship is more complex. The microbiome may influence the wider biological environment in which the skin is functioning.
The gut microbiome is also involved in the metabolism of bile acids, tryptophan, and dietary polyphenols. These compounds can affect immune activity, glucose regulation and inflammatory signalling.
The intestinal barrier is another area of interest. The cells lining the gut form a selective barrier. They must allow digested nutrients to pass into the circulation while limiting the movement of harmful microorganisms and inflammatory substances.
If this barrier becomes impaired, microbial components may interact more strongly with the immune system. Researchers have proposed that this could contribute to low-grade systemic inflammation and influence inflammatory skin conditions.
What is also interesting to know is that the skin has its own microbiome too. Bacteria, fungi and viruses live on the skin surface and within hair follicles. Their composition varies between oily, dry and moist areas of the body. Rather than simply being harmful, many of these organisms help occupy space, interact with the immune system, and contribute to the skin’s local environment.
One familiar example is Cutibacterium acnes. Despite its name, this bacterium is a normal resident of healthy skin. Acne does not necessarily develop because somebody has “too much” of it. Differences between bacterial strains, the conditions within the blocked follicle, and the way the immune system responds all matter.
The gut–skin axis therefore involves communication between two complex microbial ecosystems, rather than a battle between “good” and “bad” bacteria.
Inflammation, the Microbiome and Acne
Acne is an inflammatory disorder of the hair follicle and sebaceous gland. Androgens can increase sebaceous-gland activity and sebum production. Skin cells may then accumulate within the follicle, creating a blockage. Changes in the follicle environment and microbial activity can activate the immune system, leading to redness, swelling and painful inflammatory lesions.
In PMOS, this may overlap with insulin resistance and higher androgen activity.
Higher insulin concentrations can encourage ovarian androgen production and reduce sex hormone-binding globulin, leaving more testosterone available to act on tissues such as the skin. Insulin and insulin-like growth factor 1 may also influence the sebaceous gland and the cells lining the follicle.
Where does the gut microbiome fit into this? Studies comparing people with and without acne have reported differences in gut microbial composition and diversity. Some have found changes in bacterial groups involved in carbohydrate fermentation, short-chain-fatty-acid production, or immune regulation.
Researchers have also identified differences in the gut microbiome of women with PMOS compared with control groups. A 2024 review found that the overall evidence supports an association between PMOS and altered gut microbial patterns, but the bacterial findings varied substantially between studies. Differences in diet, medication, ethnicity, body composition and methods of analysing stool samples make it difficult to define a single “PMOS microbiome”.
There are several routes through which the microbiome could interact with PMOS and the skin. Microbial metabolites may influence insulin sensitivity, appetite regulation and inflammatory pathways. The microbiome can modify bile acids, which act as signalling molecules as well as helping digest fats. And Intestinal bacteria also influence the metabolism and recycling of some hormones.
These mechanisms are scientifically interesting, but most have not yet been shown to produce a predictable acne pattern in an individual woman with PMOS.
Lifestyle Factors That Support the Gut–Skin Connection
You do not need to know the exact names of your intestinal bacteria to support the gut–skin axis. The most evidence-based approach is to create conditions that generally support digestive, metabolic, and immune health while recognising that acne may still require medical skincare or prescription treatment.
Feed the microbiome through ordinary food
Dietary fibre provides material that intestinal bacteria can ferment. Different microbes prefer different fibres, which is why dietary variety may be more useful than concentrating on one fashionable “superfood”. Include a mixture of vegetables, fruit, beans, lentils, wholegrains, nuts, seeds, herbs and spices according to your tolerance.
Increasing fibre very quickly can worsen bloating, particularly when somebody is constipated or has been eating a low-fibre diet. Build gradually, drink enough fluid and pay attention to digestive comfort.
Plant diversity does not require thirty perfect, freshly prepared foods every week. Frozen vegetables, tinned beans, dried herbs, seeds and frozen berries all contribute.
Support blood sugar without fearing carbohydrates
Blood sugar regulation links the gut–skin discussion with PMOS metabolism. Meals dominated by rapidly digested carbohydrates may lead to a greater glucose and insulin response. Higher insulin can interact with androgen production and skin signalling.
Combine carbs with protein, fibre and healthy fats to prevent the insulin spike. For example, add eggs or Greek yoghurt to breakfast, beans or chicken to lunch, and fish, tofu, lentils or meat to an evening meal.
Choose less refined carbohydrate sources more often, while allowing flexibility for enjoyment and social eating. A supportive eating pattern should not require fear of bread, potatoes, fruit or an occasional dessert.
Consider fermented foods, but do not force them
Live yoghurt, kefir, sauerkraut, kimchi and other traditionally fermented foods can introduce microbial and chemical variety into the diet.
They can be included where enjoyed and tolerated, but they are not essential. Some people find that fermented foods aggravate digestive or histamine-related symptoms. There is no benefit in forcing down kimchi every day because social media has labelled it a gut-health requirement.
Look beyond food
The gut and skin both respond to the wider environment. Sleep disruption can impair glucose regulation, affect appetite and alter inflammatory signalling. Stress can influence the gut through the nervous system, changes in motility and altered digestive secretions. It can also exacerbate acne through neuroendocrine and inflammatory pathways.
Regular movement supports insulin sensitivity and bowel motility. It may also help regulate stress and sleep, although sweat, friction and occlusive clothing can irritate acne-prone areas in some people. Showering after exercise and changing out of damp clothing may help.
Treat digestive symptoms as symptoms, not a detox problem
Persistent bloating, pain, diarrhoea, constipation, reflux or a marked change in bowel habit deserves proper assessment.
Digestive symptoms can have many causes, including irritable bowel syndrome (IBS), coeliac disease, inflammatory bowel disease, medication effects, pelvic-floor difficulties and changes in food intake. So, it’s important to get it checked out. Seek medical advice for unexplained weight loss, blood in the stool, persistent vomiting, or a sustained change in bowel habits.
You can read more about the wider relationship between digestion, insulin and hormone metabolism in Why Gut Health Matters in PMOS. For a fuller explanation of androgen activity, insulin resistance and sebaceous-gland changes, see Acne and PMOS.
At PMOS Clinics, we look at skin concerns alongside your digestive symptoms, menstrual cycle, nutrition, sleep, stress, medication, and health history. The aim is to identify realistic areas where personalised nutrition and lifestyle support may complement appropriate medical and dermatological care.
Book a Gut and Skin Health Consultation to explore the connections between your digestive health, hormones and skin symptoms.
This article is for educational purposes and does not provide medical diagnosis or treatment. Nutritional therapy works alongside, rather than instead of, care from your GP, dermatologist or other qualified healthcare professional. Seek medical advice for painful, rapidly worsening or scarring acne, significant digestive symptoms, sudden changes in androgen-related symptoms or concerns about your mental wellbeing.
Antioxidant-Rich Summer Berry Smoothie
Cool, colourful and ready in five minutes, this summer berry smoothie makes a refreshing breakfast for warmer mornings.
Unlike smoothies made mainly from fruit juice, this recipe combines whole berries with protein, fibre and beneficial fats. This makes it more satisfying and creates a more balanced breakfast for women with polycystic ovary syndrome (PCOS), now also known as polyendocrine metabolic ovarian syndrome or PMOS.
The combination of mixed berries, protein-rich yoghurt or soya milk, ground flaxseed and chia seeds also provides nutrients involved in normal skin structure, antioxidant defence and digestive health.
It is important not to over-promise what a recipe can do. No smoothie can clear acne or correct a hormonal imbalance by itself. Skin health is influenced by many things including genes, androgen activity, insulin signalling, inflammation, stress and sleep, as well as the wider diet.
However, this smoothie can offer a convenient way to include protein, fibre, omega-3-rich seeds and several colourful plant foods in one meal.
Why Antioxidants Matter for Skin Health
Skin is continually exposed to ultraviolet light, pollution and normal metabolic processes that generate unstable molecules known as free radicals.
The body has its own antioxidant defence systems to manage these molecules. Nutrients and plant compounds obtained through food help support these systems, but antioxidants do not act as a simple internal sunscreen or “detox” treatment.
Berries are particularly rich in a family of polyphenols called anthocyanins. These are the plant pigments responsible for many of their red, purple and blue colours. Research suggests that anthocyanins can interact with antioxidant and inflammatory signalling pathways, although we cannot assume that eating berries will directly treat acne.
Berries also provide vitamin C, which is required for normal collagen formation and contributes to the protection of cells from oxidative stress.
Fresh berries are wonderful in summer, but frozen berries work just as well. They are often less expensive, reduce food waste and make the smoothie naturally cold and thick.
The protein and seeds are just as important as the berries. A fruit-only smoothie may be digested quickly and may not keep you satisfied for long. Adding protein, fat and fibre creates a more complete meal.
Serves 1
Ingredients
Method
Depending on the yoghurt and milk used, the basic recipe provides approximately 20 to 25 grams of protein. Adding a good quality protein powder can bring this closer to 30 grams.
Optional Additions:
To increase the protein
Add one of the following:
Choose a protein powder with a simple ingredient list and no sugars or sweeteners. A pea, soya or blended plant protein can be used if whey or dairy does not suit you.
Whey protein does not cause acne in everybody, but there are reports of acne worsening in some susceptible people after starting whey-based sports supplements. If your skin changed after introducing one, try a non-whey alternative rather than removing all dairy foods without good reason.
To increase the fibre
You could add:
Increase concentrated fibres gradually and drink enough fluid. Adding large amounts suddenly may cause bloating or discomfort.
To make it more filling
Smoothies are convenient, but drinking a meal can feel less satisfying than chewing one.
Make the smoothie thick enough to eat from a bowl and sprinkle with whole nuts and berries, or have it with a couple of boiled eggs, a slice of seeded toast or another protein-rich food if you know that smoothies alone do not keep you full.
You can also explore more balanced breakfasts, snacks and main meals in our PMOS Clinics Recipe Index.
For any conditions other than PMOS, please feel free to be in touch with our sister clinic Alex Allan Nutrion
PMOS Clinics is part of the Green Leaf Company (London) Ltd, a limited company registered in England and Wales. Registered number: 10990293
Disclaimer: ‘Please note that nutritional therapy is not medical advice - this should always be sought from your doctor or other medical provider. We aim to work alongside your doctor or GP to provide nutritional and lifestyle advice to support any underlying imbalances.'
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