PMOS

PMOS: Why PCOS Has Been Renamed

For many years, women have received a diagnosis that never fully captured the complexity of what they were experiencing. The term Polycystic Ovary Syndrome (PCOS) suggested the condition was primarily about cysts on the ovaries — yet this has never told the full story. The so-called "cysts" visible on ultrasound are actually immature follicles that have stalled before completing ovulation. For many women, the ovaries themselves are only one small piece of a far larger picture involving hormones, metabolism, inflammation, gut health, and whole-body endocrine function.

In May 2026, following an international consensus process involving leading researchers, clinicians, and patient advocacy groups, PCOS was officially renamed Polyendocrine Metabolic Ovarian Syndrome (PMOS). While the change may appear subtle at first glance, it reflects a significant and long-overdue shift in our understanding — recognising this not simply as an ovarian disorder, but as a complex, whole-body syndrome involving multiple hormonal and metabolic systems working together.

What PMOS Actually Means

The name Polyendocrine Metabolic Ovarian Syndrome does important work. Here's what it means:

Polyendocrine acknowledges that more than one hormonal gland is involved. The hypothalamus, pituitary, adrenal glands, pancreas, thyroid, and ovaries may all be contributing. Elevated androgens, disrupted hormonal signalling, insulin dysregulation, and cortisol imbalances are all part of this picture.

Metabolic recognises the central role your metabolic health plays in driving and sustaining symptoms. Insulin resistance is present in an estimated 50–70% of women with PMOS, including those of lean body weight — fuelling androgen excess, disrupting ovulation, and driving inflammation in a self-perpetuating cycle.

Ovarian retains the acknowledgement that the ovaries are involved — but as participants in a larger dysfunction, not the source of it.

Syndrome reflects that this is not a single-organ condition or a straightforward diagnosis — it is a collection of interconnected symptoms and system dysfunctions that present differently in every woman. Recognising it as a syndrome is what opens the door to a more comprehensive, whole-person approach to care.

How PMOS Presents: Why It's So Often Missed

PMOS can look very different from one woman to the next, which is one reason it so often goes undiagnosed or poorly managed. You might be dealing with menstrual irregularity, or you might have been told your cycles look fine while still struggling with acne, fatigue, hair changes, or difficulty conceiving.

Common presentations include:

• Irregular, absent, or very long menstrual cycles

• Acne, particularly of the jawline, chin, or back

• Excess facial or body hair, or hair thinning at the crown and temples

• Difficulty conceiving or recurrent early pregnancy loss

• Weight gain around the abdomen, or difficulty losing weight despite genuine effort

• Insulin resistance, elevated fasting insulin, or energy crashes after meals

• Fatigue, brain fog, mood changes, or anxiety

• Sleep disturbance

You can have PMOS without polycystic-appearing ovaries on ultrasound, and without elevated androgens on standard blood testing. Many women have been told they "don't have PCOS" based on a normal ultrasound — when their hormonal and metabolic picture tells a very different story. If that's been your experience, you're not alone.

The Root Systems of PMOS

In naturopathic practice, symptoms are understood as expressions of underlying imbalance. Research increasingly supports this systems-level view of PMOS:

• Insulin resistance is present in the majority of women with PMOS regardless of weight. Elevated insulin stimulates androgen production, suppresses SHBG, and disrupts ovulation — making it one of the most important levers to address.

• Chronic low-grade inflammation — evidenced by elevated CRP, TNF-alpha, and IL-6 — activates the stress response, impairs insulin signalling, and compounds androgen excess.

• Gut health plays a more significant role than many expect. Reduced microbiome diversity and increased intestinal permeability can drive inflammation, impair hormone clearance, and contribute to mood changes. If you've noticed digestive symptoms alongside hormonal ones, this connection is worth exploring.

• Stress and the adrenals are frequently overlooked. Chronic stress elevates both cortisol and adrenal androgens, compounds androgen excess, and suppresses progesterone — contributing to cycle irregularity and oestrogen dominance.

• Thyroid function often co-exists with PMOS and can worsen fatigue, weight changes, hair loss, and menstrual irregularity. A basic TSH alone is rarely sufficient to assess this fully.

• Nutrient status matters more than many realise. Magnesium, inositol, vitamin D, zinc, and omega-3s all have direct, research-supported roles in PMOS — and deficiencies are common.

Testing: What's Worth Looking At

Here's the simplified version:

Testing: What's Worth Looking At

A meaningful assessment of PMOS goes well beyond a standard hormone panel. Depending on your presentation, testing may include a combination of standard pathology and functional testing.

Standard Pathology Testing

• Hormonal markers: LH, FSH, testosterone (total and free), DHEA-S, SHBG, oestradiol, progesterone, prolactin

• Metabolic markers: Fasting insulin and glucose, HOMA-IR, HbA1c, full lipid panel

• Thyroid and adrenal: Full thyroid panel including TSH, Free T3, Free T4, reverse T3, thyroid antibodies (TPO and anti-TG), cortisol, DHEA-S

• Nutritional and inflammatory: CRP, iron studies, vitamin D, magnesium, zinc, B12, folate, magnesium

Functional Testing

Where standard pathology doesn't provide the full picture, functional testing can offer deeper insight into the underlying drivers of your symptoms:

• DUTCH Test: A comprehensive dried urine hormone test mapping sex hormones, adrenal hormones, cortisol rhythm, oestrogen metabolism pathways, and key nutrient markers — providing detail that standard blood testing cannot

• Organic acids testing (OAT): Provides insight into mitochondrial function, oxidative stress, B vitamin status, neurotransmitter metabolism, and gut dysbiosis markers

• Comprehensive microbiome analysis: A detailed stool test assessing gut bacteria, intestinal permeability, digestive function, and immune activity — particularly useful where gut symptoms, skin concerns, or mood changes are present

• Hair tissue mineral analysis (HTMA): Assesses mineral status and heavy metal burden over time, revealing patterns in zinc, magnesium, copper, and adrenal stress markers that blood testing may miss

• Genetic testing: Where relevant, exploring variants in methylation, oestrogen metabolism, androgen pathways, and inflammation can help explain why certain patterns persist and guide targeted nutritional support

This level of assessment gives us a clear picture of what's actually driving your symptoms — so that your care is targeted and meaningful, not generic.

Research-Based Treatment Strategies

Naturopathic care for PMOS is grounded in evidence. Some of the most well-researched interventions include:

• Inositol (myo-inositol and D-chiro-inositol at a 40:1 ratio) has been shown across multiple RCTs to improve insulin sensitivity, reduce androgens, and support ovulation.

• Berberine has demonstrated comparable effects to metformin in improving insulin sensitivity and reducing androgen levels, with a favourable safety profile.

• NAC supports insulin resistance, androgen reduction, and ovulation, while also addressing the oxidative stress component common in PMOS.

• Vitex agnus-castus supports menstrual regularity and ovulation, and may be particularly useful where elevated prolactin or progesterone deficiency is part of your picture. However, Vitex must be used with caution in PMOS, as it has the potential to raise the LH:FSH ratio — an imbalance that is already commonly elevated in many women with this condition and can further disrupt ovulation.

• Spearmint tea — two clinical trials have shown regular consumption can meaningfully reduce free androgens and improve hirsutism.

• Omega-3 fatty acids reduce triglycerides, lower inflammatory markers, and improve testosterone and SHBG levels.

• Magnesium deficiency is common in insulin-resistant states and has been directly associated with PMOS. Given its broad role in glucose metabolism, androgen regulation, and nervous system function, it is a foundational consideration in PMOS care.

• Zinc plays a direct role in androgen metabolism, insulin signalling, and ovarian function — and is frequently depleted in women with insulin resistance.

Diet and Lifestyle: Where Lasting Change Begins

Blood sugar support is foundational. A low-glycaemic, whole-foods dietary pattern — with adequate protein, healthy fats, and complex carbohydrates at each meal — consistently shows benefit in PMOS research. Small, consistent changes here can have a significant impact on how you feel and how your hormones behave.

Movement improves insulin sensitivity and has direct benefits on androgen levels and cycle regularity. Around 150 minutes per week is clinically meaningful. Very high-intensity exercise can worsen stress physiology for some women; a sustainable, balanced approach tends to serve you better.

Nervous system support is genuinely part of treatment — not a luxury. Chronic stress perpetuates PMOS through cortisol and androgen pathways. Practices that support regulation, whether breathwork, yoga, time in nature, or simply adequate rest, have real physiological effects.

Sleep disruption impairs insulin sensitivity, elevates cortisol, and interferes with ovulation. If this is a struggle for you, it's worth addressing directly.

Reducing environmental hormone disruptors — found in certain plastics, personal care products, and household items — is a practical and worthwhile part of a whole-person approach.

A Personalised Approach to Your Care

No two women with PMOS present the same way, and no single protocol suits everyone. When we work together, the starting point is always understanding you — your symptoms, your history, your stress load, and the specific drivers at play for you.

For some women, addressing insulin resistance is the priority. For others, gut health, adrenal support, thyroid optimisation, or nutritional repletion comes first. Often the most meaningful progress comes from working across several interconnected areas — because your body's systems are deeply connected and tend to support one another when given the right conditions.

This is what naturopathic care offers: not a one-size-fits-all approach, but a personalised framework designed to address your symptoms at their root.

Ready to Explore What's Really Going On?

If you've been navigating symptoms of PMOS — whether you have a formal diagnosis, have been dismissed in the past, or are still searching for answers — I'd love to hear from you. A free discovery call is a relaxed, no-pressure opportunity to share what you've been experiencing and find out whether a personalised naturopathic approach could be the missing piece.

Click here to book a consultation or free discovery call.

You can also reach out via email at hello@emmenaturopathy.com.au