Think You Might Have PCOS (now called PMOS)? Start Here

You've been Googling your symptoms at midnight. Your periods are all over the place. You're exhausted in a way that sleep doesn't seem to fix. Your skin is doing things you don't understand. And somewhere between the search results and the Reddit threads, those letters keep appearing: PCOS or its new name, PMOS.

If that sounds familiar you're in the right place! This post is everything you need to know if you think you might have PCOS/PMOS, or if you've just been diagnosed and have no idea where to start.

Let's break it down clearly, honestly, and without the overwhelm.

A quick note on the name change:

As of May 2026, PCOS has been officially renamed PMOS -Polyendocrine Metabolic Ovarian Syndrome - following a landmark global consensus published in The Lancet, involving 56 leading academic, clinical and patient organisations worldwide. Throughout this post I'll use both terms interchangeably, since most people still know and search for PCOS. But this name change is actually hugely significant — it finally reflects what this condition really is. I've written a dedicated post explaining exactly what it means for you - read it here.

What is PCOS/PMOS, really?

Polycystic ovary syndrome (PCOS), now officially renamed Polyendocrine Metabolic Ovarian Syndrome (PMOS) - is one of the most common hormonal conditions in women of reproductive age, affecting approximately 1 in 8 women worldwide. Despite how prevalent it is, it remains one of the most misunderstood and underdiagnosed conditions in women's health, with an average diagnosis delay of two years.

Here's the first thing most people get wrong you do not need to have cysts on your ovaries to have PCOS/PMOS. The old name was always misleading which is a big part of why it's been changed. Those "cysts" are actually immature follicles eggs that haven't fully developed due to hormonal disruption. And you can have a completely normal ultrasound and still have this condition.

The new name - Polyendocrine Metabolic Ovarian Syndrome - is far more accurate. "Polyendocrine" recognises that multiple hormones are involved. "Metabolic" acknowledges the insulin resistance and cardiometabolic features at the root of most cases. It's not just a reproductive condition. It's a complex, multi-system hormonal disorder that affects your metabolism, your gut, your skin, your mental health, your energy, and your relationship with food. Understanding this is the first step to actually managing it effectively.

How is PCOS/PMOS diagnosed?

PCOS is diagnosed using what's called the Rotterdam Criteria. You need to meet at least 2 out of 3 of the following criteria:

1. Irregular or absent periods Cycles longer than 35 days, fewer than 8 cycles per year, or periods that simply don't arrive when expected. This happens because elevated androgens and insulin disruption interfere with ovulation.

2. Signs of elevated androgens This can be clinical - meaning visible symptoms like acne, excess facial or body hair (hirsutism), or scalp hair thinning - or biochemical, meaning elevated testosterone or DHEA-S on a blood test.

3. Polycystic ovarian morphology on ultrasound 12 or more follicles visible on one ovary, or an increased ovarian volume. Important to note: this criterion alone is not enough for a PCOS diagnosis.

If you tick two of these three boxes, PCOS is likely on the table. A GP or gynaecologist can confirm with blood tests and, if needed, an ultrasound.

The symptoms nobody tells you about

Most people know about the irregular periods and the acne. But PCOS shows up in your body in ways that often go unrecognised even by doctors.

Here are the symptoms that don't always get talked about:

Fatigue that doesn't improve with sleep. Not just tiredness - a bone-deep exhaustion that makes basic tasks feel disproportionately hard. This is often driven by insulin resistance and chronic inflammation.

Brain fog. Difficulty concentrating, forgetting things, feeling mentally cloudy. The gut-brain axis and insulin dysregulation both play a role here.

Bloating and digestive issues. Women with PCOS have a significantly different gut microbiome - less diverse, more inflammatory. This can manifest as persistent bloating, constipation, diarrhoea, or food sensitivities.

Mood swings and anxiety. PCOS carries a significantly higher rate of anxiety and depression than the general population. This isn't just "hormones" - it's a direct result of gut disruption (95% of serotonin is made in the gut), blood sugar instability, and chronic inflammation.

Sugar cravings that feel out of control. Insulin resistance drives intense carbohydrate cravings. This isn't a willpower issue it's a physiological response to high circulating insulin levels.

Weight gain that feels impossible to shift, especially around the abdomen. Again insulin resistance, not a character flaw.

Skin tags or darkened patches of skin. Known as acanthosis nigricans, these dark velvety patches - often around the neck, armpits or groin - are a classic sign of insulin resistance

What's actually happening in the body?

At the root of most PCOS cases are two core mechanisms:

Insulin resistance

When your cells don't respond properly to insulin, your pancreas produces more and more of it to compensate. This excess insulin then signals the ovaries to produce higher levels of androgens - male hormones like testosterone. Those androgens disrupt ovulation, drive the symptoms you feel on your skin and hair, and create a cascade of hormonal imbalance.

This is why blood sugar management is one of the most powerful tools available to women with PCOS - and why what you eat genuinely matters.

Chronic low-grade inflammation

PCOS is also associated with ongoing, low-level inflammation throughout the body. This inflammation worsens insulin resistance, stimulates further androgen production, and contributes to the fatigue, skin issues, mood disturbances, and gut dysfunction so many of us experience daily.

And both of these - insulin resistance and inflammation - are directly influenced by your gut microbiome. Which brings us to something most PCOS conversations skip entirely.

The gut connection nobody is talking about

Your gut is not just a digestive organ. It is one of the most powerful influencers of your hormonal health, and research is increasingly showing that women with PCOS have significantly less gut microbiome diversity than women without.

Here's why that matters:

Your gut metabolises your hormones. A specific collection of gut bacteria - called the estrobolome - is responsible for metabolising and clearing oestrogen from the body. When this is disrupted, oestrogen recirculates rather than being cleared, contributing to hormonal imbalance.

Your gut drives inflammation. A disrupted gut lining allows bacterial particles into the bloodstream, triggering the chronic low-grade inflammation that worsens every aspect of PCOS.

Your gut affects your insulin sensitivity. Gut bacteria directly influence how your cells respond to insulin - through short-chain fatty acids and inflammatory signalling. Poor gut health fuels insulin resistance.

Your gut makes your serotonin. 95% of your body's serotonin is produced in the gut. Poor gut health contributes directly to the anxiety, low mood, and brain fog that are so common in PCOS.

Healing your gut is not a side project it's a central pillar of managing PCOS effectively. And the good news is that your gut is one of the most responsive systems in your body to dietary and lifestyle change.

Did you know there are 4 different types of PCOS/PMOS?

This is one of the most important things you can understand about your diagnosis and one of the least discussed.

Type 1 - Insulin-resistant PCOS is the most common, affecting up to 70% of women with PCOS. High insulin drives androgen production. Blood sugar management, strength training, and targeted supplements like myo-inositol and magnesium are the most effective interventions.

Type 2 - Adrenal PCOS is driven by chronic stress and HPA axis dysregulation. DHEA-S is elevated, but LH and FSH are often normal. The most important intervention here is stress management not more intense workouts.

Type 3 - Inflammatory PCOS is driven by chronic low-grade inflammation, often alongside gut dysfunction. An anti-inflammatory diet, gut healing protocol, and omega-3 supplementation are key.

Type 4 - Post-pill PCOS occurs when symptoms appear after stopping hormonal contraception. The pill suppresses ovulation, and when you stop, there can be a rebound surge in LH and androgens. This type often resolves with time and nutritional support - zinc, liver support, and patience.

It's very common to have features of more than one type. Knowing yours helps you stop guessing and start targeting your approach with intention.

What labs should you ask your doctor for?

One of the most empowering things you can do is go to your GP armed with the right questions. Here are the key tests worth requesting:

Hormones: Total testosterone, free testosterone, DHEA-S, LH, FSH, oestradiol, prolactin, progesterone (day 21), SHBG

Metabolic function: Fasting insulin (often missed - this is crucial), fasting glucose, HbA1c, lipid panel, liver function tests

Thyroid: TSH, free T3, free T4, thyroid antibodies - thyroid dysfunction is common alongside PCOS and frequently missed

Inflammatory markers: CRP, ferritin

Micronutrients: Vitamin D, B12, folate, iron studies, zinc, magnesium

One important note: "normal" doesn't always mean optimal. Reference ranges are designed for the general population, not specifically for women with PCOS. Ask for your actual numbers and track them over time.

Where do you start if you've just been diagnosed with PCOS or PMOS?

If you've just received a PCOS diagnosis, I want to say this first: it is not your fault, and it is not a life sentence.

PCOS is manageable. Not just "liveable" genuinely manageable, in a way that allows you to feel well, feel like yourself, and build a life that works with your body rather than against it.

Here's where to start, in order of impact:

1. Stabilise your blood sugar. This is the single most powerful first step for most women. Add protein to every meal. Eat vegetables before your carbohydrates. Don't skip breakfast. Take a short walk after meals. These small, consistent changes create meaningful hormonal shifts within weeks.

2. Move your body gently and consistently. Start with walking 8,000 steps a day is a brilliant beginning. Add two strength sessions a week when you're ready. Don't exhaust yourself with daily intense cardio. Consistency is everything; intensity is secondary.

3. Begin healing your gut. Aim for 30 different plant foods each week. Add one fermented food daily a spoonful of sauerkraut, a glass of kefir. These two changes alone can meaningfully shift your gut microbiome within weeks.

4. Protect your sleep. Poor sleep worsens insulin resistance, raises cortisol, and disrupts every hormone involved in PCOS. Seven to nine hours is not a luxury it is medicine.

5. Manage stress with the same seriousness as diet. Stress raises cortisol, which raises blood sugar and drives androgen production. Daily breathwork, gentle movement, and adequate rest are not self-indulgent they are clinical interventions for PCOS.

6. Talk to a healthcare provider who takes PCOS seriously. You deserve a practitioner who will test your fasting insulin, not just tell you to lose weight. Advocate for yourself. Take this post with you if you need to.

A note from me

I was diagnosed with PCOS after years of symptoms that nobody connected into a clear picture. Fatigue, irregular cycles, bloating that wouldn't shift, and a brain fog that made me feel like I was moving through water. I was handed a diagnosis, offered the pill, and sent on my way.

It took me years of research, working with the right practitioners, overhauling my nutrition, healing my gut, and finding movement that I genuinely loved - eventually becoming a certified Pilates instructor and now studying nutrition to understand what my body actually needed.

What changed my life wasn't one magic supplement or one perfect diet. It was understanding the root of what was happening in my body, and building small, sustainable habits that worked with my hormones instead of against them.

That's exactly what this website is here to support you with. You don't have to figure this out alone.

Your next steps

↓ Download the free PCOS Starter Guide Workbook Everything in this post - and so much more - laid out in a practical, interactive workbook you can start filling in today. Includes symptom checklists, lab test guides, meal planning templates, habit trackers, and your personal action plan. (Coming Soon)

→ Read: What the PCOS to PMOS name change actually means for you The name just changed officially. Here's what it means, why it matters, and what's different - explained clearly and without the medical jargon. Read the post here

→ Explore the blog Dive deeper into gut health, nutrition, movement, and the everyday realities of life with PCOS/PMOS - All Here

→ Follow along on Instagram Daily PCOS/PMOS tips, real food, and an honest account of what managing this condition actually looks like.