For years, many women diagnosed with polycystic ovary syndrome, commonly known as PCOS, have felt that the name did not fully explain what they were experiencing. The term focused heavily on the ovaries, even though the condition often affects far more than reproductive health.
In May 2026, an international consensus process published in The Lancet introduced a new name: polyendocrine metabolic ovarian syndrome, or PMOS. The change was designed to reflect better the condition’s endocrine, metabolic, and ovarian features, while moving away from the misleading focus on “cysts.” The global name-change process involved 56 academic, clinical, and patient organizations, along with broad input from women and health professionals around the world.
Why Was PCOS Renamed PMOS?
The name PCOS came from what early researchers observed in the ovaries: multiple small follicles that were often described as cysts. Over time, however, clinicians and researchers came to understand that these were not necessarily abnormal ovarian cysts and that the condition was not limited to the ovaries.
The new name, PMOS, helps emphasize that this is a broader hormonal and metabolic condition. “Polyendocrine” points to the involvement of multiple hormone systems. “Metabolic” recognizes the role of insulin resistance, blood sugar regulation, weight-related challenges, and long-term metabolic health. “Ovarian” remains part of the name because ovulation, cycle regularity, fertility, and ovarian hormone activity can still be involved.
This change matters because many women experience symptoms that extend well beyond irregular periods. PMOS may involve androgen-related symptoms such as acne, excess facial or body hair, or scalp hair thinning, as well as concerns related to insulin resistance, inflammation, fatigue, mood, fertility, and cardiometabolic health.
PMOS Can Look Different for Every Woman
One reason PMOS can be so frustrating is that it does not present the same way in everyone. Some women may struggle most with irregular cycles or fertility concerns. Others may be more affected by acne, hair growth, insulin resistance, weight gain, blood sugar changes, or fatigue.
It is also important to understand that PMOS is not limited to one body type. Lean women can experience PMOS and may still have hormonal or metabolic changes that require evaluation. Research on lean PCOS has found that hormonal, metabolic, and related health markers can still differ from those of healthy counterparts, even when body weight does not appear to be the primary concern.
That is why individualized care is so important. A woman’s symptoms, health history, lab results, lifestyle factors, and goals should all be considered before recommendations are made.
The Role of Insulin Resistance and Metabolic Health
The shift from PCOS to PMOS brings more attention to one of the most common underlying concerns: insulin resistance. Insulin resistance occurs when the body has difficulty using insulin effectively, which may affect blood sugar regulation and contribute to increased androgen activity.
Research has long connected PCOS with metabolic concerns, and the new terminology helps bring those issues to the front of the conversation. Insulin resistance has been reported in many women with PCOS/PMOS and may influence symptoms related to cycles, ovulation, androgen levels, and long-term health.
Where Targeted Support May Fit In
Management of PMOS should always begin with a qualified healthcare provider who can evaluate symptoms, order appropriate testing, and recommend a care plan. Depending on the woman, support may involve nutrition, movement, sleep, stress management, medication, supplements, hormone evaluation, or other individualized strategies.
Some supplements have been studied in PCOS/PMOS-related care. For example, a systematic review used to inform the 2023 international evidence-based PCOS guideline update found that myo-inositol and D-chiro-inositol may have benefits for some metabolic measures, though results vary by outcome, and more research is needed.
Berberine has also been studied in women with PCOS and insulin resistance. A systematic review found that berberine showed promise, but the authors noted that more well-designed clinical trials are needed to better confirm its safety and effectiveness. At Westmoreland Pharmacy + Compounding, we carry Integrative Therapeutics nutritional supplements and can help recommend one of their professional-grade Berberine options.
Because supplements can interact with medications, affect blood sugar, or be inappropriate for certain women, they should be selected with professional guidance.
How Westmoreland Pharmacy + Compounding Can Support Personalized Care
At Westmoreland Pharmacy + Compounding, we understand that hormone-related concerns are rarely one-size-fits-all. PMOS is a clear example of why personalized support matters. Women may have different symptoms, different lab results, different sensitivities, and different goals.
Our compounding team works with women and providers to support individualized care when commercially available options do not fully meet a woman’s needs. This may include customized dosage forms, provider-directed hormone support, or guidance on high-quality nutritional supplements when appropriate.
The renaming of PCOS to PMOS is more than a terminology update. It is a reminder that women’s hormonal health deserves a whole-body, personalized approach. If you have been diagnosed with PCOS, are hearing the term PMOS for the first time, or have symptoms you are still trying to understand, talk with your healthcare provider about appropriate testing and treatment options.
Westmoreland Pharmacy + Compounding is here to be a knowledgeable pharmacy partner as you and your provider explore the next steps in your care. Learn more about Women’s Health at Westmoreland Pharmacy.
Frequently Asked Questions About PCOS, PMOS, and Personalized Hormone Support
Is PMOS the same condition as PCOS?
Yes. PMOS refers to the same condition historically known as PCOS, but the new name is intended to better describe what is happening in the body. Rather than focusing mainly on “polycystic ovaries,” PMOS recognizes that the condition can involve multiple hormone systems, metabolic health, insulin function, ovulation, and androgen levels.
Does everyone with PMOS have ovarian cysts?
No. One of the reasons the name PCOS was reconsidered is that not every woman has ovarian cysts, and the “cysts” often referenced are actually immature follicles rather than true cysts. A patient may still have PMOS even if ovarian cysts are not present on imaging.
What symptoms should I talk to my provider about?
Patients may want to speak with a healthcare provider if they experience irregular periods, acne, unwanted facial or body hair, scalp hair thinning, difficulty with ovulation, fertility concerns, unexplained weight resistance, fatigue, or signs of blood sugar imbalance. Because symptoms vary from person to person, testing and a full health history are important.
Can Westmoreland Pharmacy help with PMOS?
Our compounding pharmacy does not diagnose PMOS, but it may support provider-directed care when commercially available options do not fully meet a woman’s needs. This may include customized dosage forms, individualized hormone-related prescriptions, or guidance on professional-grade supplements when appropriate.
Why is testing important before starting supplements or hormone support?
PMOS can involve different hormone and metabolic patterns in one patient to another. Testing may help identify concerns such as androgen imbalance, insulin resistance, thyroid involvement, progesterone changes, or other factors that could influence care. This matters because a supplement or hormone-support option that is appropriate for one person may not be right for another.
