If you were diagnosed with polycystic ovary syndrome, or PCOS, you may have recently heard it called by a new name: polyendocrine metabolic ovarian syndrome, or PMOS. Same condition, same patients, but a name that finally reflects what is actually going on in the body.
For most women with PMOS, that reality includes insulin resistance. It is not a side note to the diagnosis. It is one of the central drivers of it, and it is often present years before a period ever becomes irregular. Insulin resistance can quietly influence hormone levels, ovulation, weight, skin, and long term metabolic health, whether or not you are living in a larger body.
In this article, we will walk through what insulin resistance is, why it shows up so often alongside PMOS, the signs worth paying attention to, and what a functional, whole body approach to managing it actually looks like.
Key Takeaways
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Why Was PCOS Renamed to PMOS?
The name polycystic ovary syndrome was never a great fit. It put the spotlight on ovarian cysts, when cysts are not required for diagnosis and are not the source of most of the condition’s health impact. In 2026, a global consensus process, led by the Androgen Excess and PCOS Society and published in The Lancet, formally renamed the condition polyendocrine metabolic ovarian syndrome, or PMOS.
The new name captures what specialists have understood for years: this is a condition rooted in hormone signaling and metabolism, not just the ovaries. “Polyendocrine metabolic” points directly to the insulin, androgen, and metabolic disruption that drive most of the symptoms and long term risk.
If your chart still says PCOS, nothing about your diagnosis, your treatment plan, or your body has changed. It is the same condition, the same patients, and a name that finally matches the science.
How PMOS Is Diagnosed
PMOS is typically diagnosed using the Rotterdam criteria, which requires at least two of three features: irregular or absent ovulation, clinical or lab evidence of elevated androgens (like excess hair growth, acne, or elevated testosterone), and polycystic-appearing ovaries on ultrasound. A full workup also rules out thyroid disease and other hormone conditions that can mimic PMOS, and often includes bloodwork to assess insulin and glucose, since insulin resistance is so common alongside it.
What Is Insulin Resistance?
Insulin is the hormone that signals your cells to pull glucose out of the bloodstream and use it for energy. In a well regulated system, your pancreas releases just enough insulin to keep blood glucose levels steady.
Insulin resistance happens when cells stop responding to insulin’s signal as efficiently. Glucose has a harder time getting into cells, so the pancreas compensates by producing more and more insulin to get the same job done. Over time, this leads to chronically elevated insulin levels, known as hyperinsulinemia, even while blood sugar itself may still look normal on a standard test.
This matters well beyond blood sugar control. Elevated insulin levels directly influence the ovaries, stimulating them to produce more androgens (like testosterone), which is one of the key mechanisms connecting insulin resistance to irregular ovulation, fertility challenges, and the hormonal symptoms of PMOS.
The PMOS–Insulin Resistance Link
Research consistently shows that a majority of women with PMOS have some degree of insulin resistance, with estimates ranging from roughly 35 to 80 percent depending on the population studied, and this holds true across body sizes. You do not need to have obesity to have significant insulin resistance with PMOS, though excess weight can make it more pronounced.
The insulin-androgen connection runs in both directions. High insulin levels push the ovaries to produce more androgens, and elevated androgens can, in turn, worsen insulin resistance, particularly in the liver and muscle tissue. This creates a self-reinforcing cycle: insulin resistance drives weight gain and higher androgen levels, which worsens PMOS symptoms, which can make insulin resistance harder to manage. Breaking into that cycle at any point, whether through diet, movement, sleep, or medical treatment, tends to improve the whole picture.
Signs and Symptoms to Watch For
Physical Signs
- Excess hair growth on the face, chest, or back (hirsutism)
- Persistent acne, especially along the jawline
- Skin tags or darkened, velvety patches of skin (often at the neck or underarms)
- Thinning hair on the scalp
Metabolic Signs
- Weight gain that is difficult to shift, especially around the midsection
- Fatigue or energy crashes after meals
- Intense sugar or carbohydrate cravings
- Elevated fasting glucose or triglycerides on bloodwork
Reproductive Signs
- Irregular, infrequent, or absent menstrual cycles
- Difficulty ovulating
- Infertility or a longer than expected time trying to conceive
Clinically, the diagnostic triad most often used for PMOS combines irregular ovulation, elevated androgens, and the characteristic ovarian appearance on ultrasound, with insulin resistance assessed alongside as a key metabolic driver rather than a formal diagnostic criterion.
How Insulin Resistance Is Diagnosed
There is no single perfect test for insulin resistance, but a functional medicine workup typically looks at fasting insulin and fasting glucose together, sometimes calculated into a HOMA-IR score, alongside hemoglobin A1c and a full lipid panel. Fasting glucose alone can look completely normal for years while fasting insulin is already elevated, which is why insulin levels, not just glucose, deserve a place in your bloodwork if you have PMOS.
Health Risks If Left Unmanaged
- Type 2 diabetes: chronically elevated insulin can progress to full insulin resistance and diabetes over time
- Cardiovascular disease and high blood pressure: insulin resistance is linked to unfavorable cholesterol patterns and vascular inflammation
- Fertility complications: ongoing anovulation makes conceiving more difficult and increases pregnancy related risks when it does occur
- Metabolic syndrome: the long term clustering of high blood pressure, high blood sugar, and abnormal cholesterol that raises risk for heart disease and stroke
Managing Insulin Resistance With PMOS
Diet Strategies
A pattern built around protein, fiber, and healthy fats at each meal helps blunt post meal glucose and insulin spikes. This does not mean an all or nothing approach to carbohydrates. It means pairing them thoughtfully and prioritizing whole, minimally processed foods most of the time.
Exercise
Both strength training and regular movement improve how efficiently your muscles take up glucose, independent of weight change. Building muscle mass is one of the most effective long term levers for improving insulin sensitivity.
Sleep and Stress Management
Poor sleep and chronically elevated cortisol both worsen insulin resistance. Prioritizing consistent sleep and building in real stress recovery, not just willpower, is part of a complete plan.
Medical Treatments
Metformin remains one of the most well studied medical treatments for insulin resistance in PMOS, and other options may be appropriate depending on your full picture. Nutraceuticals like berberine may also be an option as well as low dose GLP medications. The right combination is personal, and it is worth working through with a provider who treats PMOS as the whole body condition it is, not just an ovarian issue.
Conclusion
Insulin resistance is not a footnote to a PMOS diagnosis. For most women, it is one of the primary forces behind the symptoms that brought them in the door in the first place, from irregular cycles to stubborn weight changes to skin and hair symptoms. The good news is that insulin resistance responds well to the right combination of diet, movement, sleep, stress support, and, when appropriate, medication. Addressing it does not just improve blood sugar. It improves the whole hormonal picture.
Ready to Get to the Root of Your PMOS Symptoms?
| Work With Hormone Wellness MD
Kate Willis, FNP, IFMCP, MSCP, works closely with women navigating PMOS and insulin resistance, building personalized plans that look at hormones, metabolism, and lifestyle together. If irregular cycles, stubborn weight changes, or blood sugar concerns sound familiar, we would love to help you find real answers. Schedule a consultation at hormonewellnessmd.com/new-patient-consultation |
References
Xu, Y., & Qiao, J. (2022). Association of insulin resistance and elevated androgen levels with polycystic ovarian syndrome (PCOS): A review of literature. Journal of Healthcare Engineering. DOI: 10.1155/2022/9240569
Rocha, A. L., et al. Insulin resistance, metabolic syndrome and polycystic ovaries: an intriguing conundrum. PMC. View source
Zeng, X., et al. (2023). Insulin resistance in polycystic ovary syndrome across various tissues: an updated review of pathogenesis, evaluation, and treatment. Journal of Ovarian Research. DOI: 10.1186/s13048-022-01091-0
Taieb, A., et al. (2024). Rethinking the terminology: a perspective on renaming polycystic ovary syndrome for an enhanced pathophysiological understanding. Therapeutic Advances in Endocrinology and Metabolism. DOI: 10.1177/11795514241296777
Teede, H., Piltonen, T., et al. (2026). Polyendocrine metabolic ovarian syndrome, the new name for polycystic ovary syndrome: a multistep global consensus process. The Lancet. View source
