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The Healf Source
PCOS Has A New Name — Here’s What PMOS Means
The condition affects millions of women, but the old name never quite matched the experience of living with it.
Written by: Samantha Nice
Written on: June 6, 2026
PCOS has a new name and, for once, it’s not just medical admin. The condition, previously known as Polycystic Ovary Syndrome (PCOS), is now called PMOS, short for Polyendocrine Metabolic Ovarian Syndrome. The update reflects something women and clinicians have said for years: the old name did not really reflect the experience of living with it.
“It affects around one in eight women worldwide, over 170 million people, yet the name PCOS didn’t reflect how broad the condition actually is,” says nutritional therapist Megan Hallett mBANT, rCNHC. “Many women with PMOS do not have ovarian cysts, which made the old name actively misleading.”
Why did the name change?
Mostly because “Polycystic Ovary Syndrome” had stopped making much sense. “PCOS reduced a complex hormonal condition to a misunderstanding about cysts,” says Hallett. “That contributed to missed diagnoses and women not always receiving the right support.”
The rename followed a global collaboration involving healthcare professionals, researchers, medical organisations and women living with the condition themselves, many of whom had pushed for change for years. The hope is that PMOS gives a clearer explanation of what women are actually dealing with and, in turn, improves awareness, care, and outcomes.
What is PMOS?
PMOS is a hormonal and metabolic condition that affects how the ovaries work, though for many women, the symptoms stretch far beyond just period or fertility problems. “It affects your hormones, metabolism, reproductive health, skin, weight, and even your mental health,” says Hallett.
For some, PMOS shows up through irregular cycles, acne or hair changes. For others, it feels more like stronger cravings, energy dips, feeling hungry an hour after eating, or weight changes that don’t quite add up. The mix of symptoms can look surprisingly different from one person to the next.
PMOS is usually identified using at least two of the following:
- Irregular or missing periods, which may suggest ovulation is not happening regularly
- Signs of higher androgen levels which can mean acne, facial or body hair growth, or hair thinning
- Ovarian changes seen on an ultrasound scan
You don’t need all three to be diagnosed, which is partly why the old name caused so much confusion.
A lot of PMOS also comes back to insulin. “PMOS is driven by insulin resistance and hormonal dysregulation, not just ovarian function,” says Hallett. Insulin helps move glucose from the bloodstream into cells to be used for energy. When the body becomes less responsive to it, blood sugar can become harder to regulate. That may show up as feeling hungry despite eating not that long ago, cravings for certain foods, fluctuations in energy levels, brain fog, or weight that feels harder to manage. This is also why advice around managing PMOS often focuses on blood sugar, movement, and building meals that actually keep you full, rather than purely looking at hormones.
So, what actually helps manage PMOS?
PMOS usually responds better to consistency than extremes. Cutting entire food groups, overtraining or trying to “fix” symptoms overnight tends to backfire. Hallett says the women who feel best are often focusing on a handful of simple habits that actually feel realistic to keep up.
Build meals that actually keep you full
For many women with PMOS, blood sugar is a useful place to start. “Protein and fibre are really important for PMOS,” says Hallett. “Protein helps with blood sugar regulation and satiety, while fibre slows glucose release, feeds beneficial gut bacteria, and supports hormone clearance.”
Often, it comes down to a few fairly simple things:
- Prioritising protein at breakfast so you are not starving by 10am
- Pairing carbohydrates with protein or fat instead of eating them on their own
- Eating more fibre-rich foods like vegetables, beans, oats and seeds
- Cutting back on ultra-processed foods that drive sharper blood sugar spikes
Eating too little can become part of the problem too. “Women often think eating less will help symptoms, but under-eating can raise cortisol and worsen hormonal imbalance,” Hallett says.
Lift weights before adding more cardio
For years, plenty of women with PCOS were told to simply exercise more, which often translated into long runs, HIIT classes, or hours in the gym trying to sweat every symptom away. PMOS is often closely linked to insulin resistance, though, which means the goal is not necessarily burning as many calories as possible. Building muscle can help the body respond to insulin more effectively, which is partly why strength training tends to make more sense for PMOS than endless cardio.
“Resistance training and weight lifting are particularly effective for improving insulin sensitivity and body composition,” says Hallett. Two or three strength sessions across the week, alongside regular walks, is a strong place to begin. Even a short walk after meals, around 10 to 15 minutes, can help support steadier blood sugar.
Start with three supplements that actually make sense
You do not need an overflowing supplement drawer, though a few targeted additions may be worth knowing about.
- Inositol
If there is one supplement that comes up most for PMOS, it is probably inositol. Hallett says myo-inositol and d-chiro inositol are among the best researched, particularly for insulin sensitivity and ovulation. Some studies have linked it with improved cycle regularity and metabolic markers too.
- Vitamin D
Vitamin D comes up often for a simple reason: many women with PMOS are low in it. Low vitamin D levels have been linked with insulin resistance and metabolic dysfunction in women with PCOS, while some research suggests supplementation may help support glucose metabolism and hormonal health.
It’s not necessarily about taking huge doses, though. This is one supplement where knowing your levels first can be genuinely useful. Our Healf Zone at-home testing kits can help you with that, as well as 35+ other biomarkers.
- Omega-3
Omega-3s are often recommended when inflammation, cholesterol, or blood sugar feel slightly out of sync. Research suggests omega-3 fatty acids may help improve insulin sensitivity and markers linked to inflammation in women with PMOS, while also supporting hormone production and cardiovascular health.
None of this means supplements replace the basics. Hallett says they tend to work best when food, movement, and sleep are already in a reasonably good place.
Make sleep more predictable
Poor sleep has a habit of making PMOS symptoms feel louder. Cravings tend to hit harder, energy feels more up and down, and blood sugar can become trickier to steady after a bad night. “Elevated cortisol directly affects insulin and androgen levels,” says Hallett. “Prioritising sleep and reducing stress can make a bigger difference than many women realise.”
This doesn’t need to mean an elaborate evening routine. A more realistic place to start is keeping sleep fairly regular, getting outside early in the day and eating enough so you are not ending up overly hungry by evening. If sleep feels off, hormones often do too.
PMOS vs PCOS — what actually changes?
For now, the change is mostly in name only. Symptoms, diagnosis, and treatment stay broadly the same. What changes is the framing and, for a lot of women, that makes a difference.
PCOS always sounded narrower than the condition many women were actually living with. PMOS recognises that the experience often stretches far beyond periods or fertility alone.
Whether the new name sticks long term or not, it points towards something women have been asking for for years — a clearer explanation, earlier answers and support that reflects the condition more accurately.
Your PMOS and PCOS questions, answered
What is PMOS?
PMOS stands for Polyendocrine Metabolic Ovarian Syndrome. It is the new name for PCOS (previously known as Polycystic Ovary Syndrome). The condition itself has not changed, but the updated name reflects the fact that it often affects metabolism, insulin sensitivity, hormones and inflammation, not just the ovaries.
Is PMOS the same as PCOS?
Yes. PMOS is the new name for the condition previously called PCOS. Symptoms, diagnosis, and treatment approaches remain broadly the same, though the updated name is designed to better reflect what’s happening biologically.
Why was PCOS renamed PMOS?
Mostly because the old name caused a lot of confusion. Many women diagnosed with PMOS never had ovarian cysts, while symptoms often extended far beyond reproductive health. PMOS recognises the metabolic side of the condition, including insulin resistance, blood sugar changes, and inflammation.
Who does PMOS affect?
PMOS affects around one in eight women of reproductive age, although many people go undiagnosed for years. PMOS symptoms can include irregular periods, acne, fatigue, cravings, hair changes, fertility challenges, and weight fluctuations, though no two experiences look exactly the same.
Can you have PMOS without ovarian cysts?
Yes, and plenty of women do. This is one of the biggest reasons behind the name change. Having ovarian cysts has never been essential for diagnosis.
What helps manage PMOS?
There isn’t one single approach, but things like strength training, regular movement, steadier blood sugar, enough protein, good sleep, and targeted supplements may help depending on symptoms. For some women, support around insulin sensitivity can make a meaningful difference.
What supplements are good for PMOS?
This depends on symptoms and individual needs, but inositol, omega-3, magnesium and vitamin D are often discussed in relation to PMOS. It’s usually worth understanding what your body may actually need support with before adding lots of supplements.
Is PMOS linked to insulin resistance?
Often, yes. Insulin resistance is thought to affect many women with PMOS, including some who appear otherwise healthy. This is partly why symptoms can include energy crashes, cravings, blood sugar swings and weight changes.
This article is for informational purposes only, even if and regardless of whether it features the advice of physicians and medical practitioners. This article is not, nor is it intended to be, a substitute for professional medical advice, diagnosis, or treatment and should never be relied upon for specific medical advice. The views expressed in this article are the views of the expert and do not necessarily represent the views of Healf
Samantha Nice is a seasoned wellness writer with over a decade of experience crafting content for a diverse range of global brands. A passionate advocate for holistic wellbeing, she brings a particular focus to supplements, women’s health, strength training, and running. Samantha is a proud member of the Healf editorial team, where she merges her love for storytelling with industry insights and science-backed evidence.
An avid WHOOP wearer, keen runner (with a sub 1:30 half marathon) hot yoga enthusiast and regular gym goer, Samantha lives and breathes the wellness lifestyle she writes about. With a solid black book of trusted contacts (including some of the industry’s leading experts) she’s committed to creating accessible, well-informed content that empowers and inspires Healf readers.
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