PCOS Has Been Renamed PMOS: What Women Need to Know

For years, women have been told they have PCOS (Polycystic Ovary Syndrome) based on symptoms like irregular periods, acne, weight gain, difficulty conceiving, or excess hair growth. But there has been a problem with that name for a long time, because for many women, the ovaries are only part of the story.

In a landmark shift formally announced in Prague and published in The Lancet in May 2026, PCOS has been officially renamed PMOS (Polyendocrine Metabolic Ovarian Syndrome) after 14 years of campaigning led by Monash University’s Professor Helena Teede, alongside international experts and people with lived experience.

The new name reflects what many integrative and naturopathic practitioners have been saying for years; this condition is not just an ovarian issue. It is a complex metabolic, hormonal, inflammatory, and endocrine condition involving multiple systems of the body.

by Amy Angus, ND

What Is PMOS (Polyendocrine Metabolic Ovarian Syndrome)?

Polyendocrine Metabolic Ovarian Syndrome, or PMOS, is the new name for the condition previously known as Polycystic Ovary Syndrome (PCOS). It is a complex, long-term endocrine condition involving interactions between hormone regulation, metabolism and ovarian function.

PMOS can affect menstrual cycles, ovulation, fertility, skin and hair, weight, blood sugar regulation, mental health and longer-term metabolic wellbeing. The name change does not mean the condition or its current diagnostic criteria have changed. Instead, it provides a more accurate description and moves away from the misleading idea that ovarian cysts are always present or are the condition’s defining feature.

Why was PCOS renamed to PMOS?

The previous name placed the focus heavily on the ovaries and cysts. But in reality:

• Not all women with PCOS actually have ovarian cysts
• The “cysts” are technically immature follicles
• Many women experience significant metabolic symptoms long before ovarian symptoms or cysts appear.
• The condition involves far more than reproductive hormones alone

The misunderstanding about cysts and the focus on ovaries has led to missed diagnoses and inadequate treatment. In some cases women were waiting 12 years before they received a diagnosis. 

The new name ‘Polyendocrine Metabolic Ovarian Syndrome’ better reflects the interconnected nature of what is happening. Because when we take a broader view, we often observe disruptions involving:

• Insulin and blood sugar regulation
• Cortisol from stress and anxiety 
• Inflammation
• Gut health 
• Thyroid function
• Androgen metabolism
• Nutrient deficiencies
• Ovulation signalling pathways
• Mitochondrial function and energy production

This is exactly why a narrow, symptom-based treatment approach so often falls short. As I often say in clinic, we do not treat symptoms in isolation. We ask why the body is struggling in the first place. 

What Does Polyendocrine Metabolic Ovarian Syndrome Mean?

One of the biggest misconceptions I see is the idea that PMOS is simply a female hormone imbalance.

But when we dig deeper into the biochemistry, it is rarely that simple.

For many women, PMOS is deeply connected to insulin resistance, one of the biggest drivers we see clinically. Elevated insulin levels can stimulate the ovaries to produce more androgens such as testosterone, contributing to acne, hair growth, scalp thinning, irregular cycles, and ovulation issues.

But insulin resistance does not happen in isolation either. We need to ask:

• Why is insulin signalling impaired?
• Is inflammation involved?
• Is stress driving cortisol dysregulation?
• Are nutrient deficiencies impairing glucose regulation?
• Is sleep affecting metabolic function?

PMOS Symptoms and the Metabolic Connection

The inclusion of the word “metabolic” in PMOS is incredibly significant.

Many women with PMOS are also dealing with weight loss resistance, fatigue, blood sugar crashes, cravings, elevated cholesterol, mood instability, and increased cardiovascular risk. These symptoms are often dismissed or treated separately, but they are often connected.

This is why simply prescribing the oral contraceptive pill or focusing only on cycle regulation often does not address the deeper drivers. For some women, medications can be beneficial. But they rarely solve the mystery of why the body developed the dysfunction in the first place.

How Stress and Inflammation May Affect PMOS Symptoms

Something I commonly see in clinic is the relationship between PMOS and chronic stress. When the nervous system stays switched on long-term, it impacts blood sugar regulation, ovulation signalling, thyroid conversion, sleep quality, inflammation, gut permeability, and androgen balance. The body is prioritising survival over reproduction.

This is where many women feel deeply frustrated, because they are trying to “fix hormones” without anyone looking at the systems upstream driving the imbalance. Sometimes the ovaries are simply responding appropriately to an environment that has become metabolically and neurologically stressed. A key reason why nervous system support is so important even if women don’t necessarily feel stressed. 

Why a Root-Cause Approach Matters in PMOS:

Because two women with PMOS may have completely different underlying drivers. For one, gut dysbiosis and inflammation may be dominant. For another, insulin resistance and metabolic dysfunction may be central. For someone else, chronic stress, under-eating, overtraining, and cortisol dysregulation may be the primary contributors.

This is why personalised care matters. Functional pathology, thorough case-taking, metabolic assessment, and understanding the full clinical picture allow us to connect the dots rather than chase a diagnosis in isolation.

PMOS and Fertility – Understanding the Full Picture: 

Ovulation dysfunction is an important piece of PMOS, but fertility outcomes are influenced by far more than ovulation alone. We also need to consider egg quality, inflammation, insulin sensitivity, nutrient status, thyroid function, stress physiology, sleep, gut health, and environmental exposures.

This is where collaborative care is invaluable. I regularly work alongside GPs, fertility specialists, psychologists, and allied health professionals to support women more comprehensively.

What Does the New PMOS Name Mean for Diagnosis and Care?

Although the name has changed, the condition itself has not. What has changed is how it is understood, with PMOS more accurately recognised as a complex endocrine and metabolic condition rather than an issue confined to the ovaries.

Associate Professor Magda Simonis notes that the new name places practitioners at the centre of diagnosis and management, with an emphasis on lifestyle and listening to women; addressing the full presentation, whether that is irregular periods, resistance to weight loss, acne, or other symptoms depending on their stage of life. 

If you have been diagnosed with PCOS or PMOS and feel you are still not getting answers, it may be worth exploring whether factors such as metabolic health, insulin regulation, inflammation, stress physiology, gut health, nutrient status, sleep, thyroid function and overall lifestyle load are relevant to your individual presentation. These factors do not contribute equally in every case, which is why assessment and care should be personalised rather than based on assumptions about a single underlying cause.

From a naturopathic perspective, the goal is to understand the unique drivers behind your symptoms and support the body in a way that is individualised, sustainable, and responsive to the stage of life you are in, rather than applying a one-size-fits-all approach to hormonal health.

Final Thoughts:

I have eagerly welcomed the move from PCOS to PMOS.

It validates what many women have intuitively felt for years, that this condition is bigger than just the ovaries. And it reflects what we see clinically every day: that hormone symptoms are often downstream from deeper metabolic and physiological imbalances.

When we stop treating the body like a collection of disconnected parts and start understanding the interconnected pathways driving dysfunction, that is where meaningful and lasting progress happens.

If you are struggling with PMOS symptoms and would like a personalised, root-cause, evidence-based approach, I would love to support you. Book a consultation at Perpetual Wellbeing today.