PCOS or PMOS? What it actually means for your hormones, and what actually supports it

If you have been told you have polycystic ovary syndrome, or you suspect you might, you are far from alone. PCOS is the most common hormonal condition affecting women, and it is thought to play a part in up to 30% of cases where couples are struggling to conceive. It is also one of the most underdiagnosed conditions I see in clinic. Some estimates suggest it affects as many as 1 in 7 women during their reproductive years, yet many go years without an explanation for what they are experiencing.

Why you might be hearing a new name for it

The term polycystic ovary syndrome describes a condition where the ovaries contain multiple small, underdeveloped follicles. These follicles often struggle to release an egg, which means ovulation does not happen as it should.

What is shifting in 2026 is the language we use to describe it. PCOS is increasingly being referred to as Polyendocrine Metabolic Ovarian Syndrome, or PMOS. This reflects something I have said to clients for years: this condition is never just about the ovaries. It touches blood sugar regulation, metabolic health, and the wider hormone system.

What is actually driving it

PCOS/PMOS is complex, and there is no single cause. It tends to arise from a combination of genetic and environmental factors, and it looks different from woman to woman. That is part of why it is so often missed.

A large proportion of women with PCOS/PMOS have excess testosterone alongside disrupted insulin activity. Insulin is one of the main hormones responsible for keeping blood sugar steady, so when its signalling goes off course, the knock-on effects can be significant.

Because so many body systems are involved, the symptoms can show up in ways that seem unrelated at first glance: 🚩 Irregular or absent periods 🚩 Difficulty conceiving or recurrent miscarriage 🚩 Acne and oily skin 🚩 Low mood 🚩 Weight gain, particularly around the middle 🚩 Excess hair growth on the face or body 🚩 Hair thinning on the scalp 🚩 Insulin resistance

Left unaddressed, PCOS/PMOS also raises the long term risk of metabolic syndrome, cardiovascular disease, non-alcoholic fatty liver disease and chronic low grade inflammation.

The good news

Diet and lifestyle changes can make a real difference to how PCOS/PMOS presents. In clinic, the most effective natural approaches tend to centre on four areas working together: hormone balance, ovarian function, blood sugar balance and weight management. This isn't about restriction, it's about nourishment, and women often notice meaningful improvement in their symptoms once these areas are properly supported.

Here are four dietary changes I would prioritise first, along with three lifestyle factors that tend to have an outsized impact.

Four diet changes that support PCOS/PMOS

1. Cut back on refined and processed foods. Sugary drinks, packaged snacks and convenience foods place extra strain on insulin signalling, which is already under pressure in PCOS/PMOS. Swapping these out for organic (where possible) wholefoods cooked from scratch, eaten as three distinct meals rather than grazing throughout the day, gives your blood sugar far less work to do.

2. Build every meal around protein and healthy fat. Poultry, fish, tofu, tempeh, beans, chickpeas and eggs alongside nuts, seeds, oily fish, avocado, olives or grass-fed butter help to slow the release of glucose into the bloodstream and keep insulin steadier for longer.

3. Swap higher-carbohydrate staples for lower-carb alternatives. Cauliflower rice, roasted celeriac, courgetti and cabbage pappardelle in place of potatoes, pasta and rice can meaningfully reduce the blood sugar load of a meal. Aim for roughly half your plate to be non-starchy vegetables that grow above ground.

4. Widen the variety of plants on your plate. Aim for 30 different veg, fruit, legumes, nuts and seeds across the week, and include a daily portion of fermented food such as kefir, kombucha, sauerkraut or kimchi. Diversity here supports the gut bacteria involved in hormone clearance, while cruciferous vegetables like broccoli and cauliflower, along with phytoestrogen-rich foods such as miso and chickpeas, offer additional support for hormone balance.

Three lifestyle factors worth your attention

1. Sleep hygiene. Poor sleep raises cortisol and disrupts insulin sensitivity, which makes an already sensitive system work harder. Protecting a consistent, good quality sleep routine is one of the simplest levers available, and it is often the one that gets overlooked first when life is busy. This is a big enough piece of the puzzle that we spend a whole module on restoring great sleep in THRIVE AFTER 35, and it is something we work on with every single 1:1 client, not as an afterthought but as core groundwork. If you want somewhere to start tonight, my free seven day sleep meal plan is designed to support the biology behind good sleep through what you eat across the day.

2. Regular exercise. Movement supports healthy weight maintenance and helps regulate the stress response, both of which matter for insulin sensitivity and hormone balance. This does not need to mean high intensity training. Consistency matters more than intensity here, which is exactly the thinking behind Results in 20, my 20 minute workout programme built for busy women. It is a simple five day structure of strength, cardio and recovery sessions, designed to be hormone supportive rather than pushing you into burnout, so it fits around real life rather than competing with it.

3. Reducing your toxic load. Auditing your diet, home and personal care products for unnecessary chemical exposure is worth doing gradually. This is one of the main pillars we work on together, both 1:1 and in THRIVE AFTER 35, because it genuinely moves the needle on hormone balance. The average woman uses around 12 personal care products a day, exposing her to roughly 168 chemicals, and the World Health Organization has identified close to 800 chemicals known or suspected to interfere with hormones, including phthalates, BPA, parabens and triclosan, all commonly found in conventional skincare. Unlike something you eat, what goes on your skin has no stomach acid or liver check standing between it and your bloodstream, some of it is absorbed within minutes. It is why I recommend Tropic Skincare to clients: a toxin-free, vegan and COSMOS-certified organic brand that takes what goes on your skin as seriously as I take what goes onto your plate.

Where to start

You do not need to overhaul everything straight away. I see this a lot in clinic: women who arrive feeling overwhelmed by everything they think they should be doing, and my job is to help them turn that into a simple, doable action plan. Pick one or two changes from the list above that feel like an easy win, get comfortable with those, and build from there. Small changes can have a powerful impact, and this is your toolkit for life, not a short term fix.

If you recognise yourself in this and want a clearer picture of what is driving your symptoms specifically, that is exactly the kind of work we do together in clinic. Visit my website where you can find out more about how I can help you and where you can book a free discovery call to chat things through- https://lucychilderley.co.uk/