· By Amy Suzanne Upchurch, Founder + CEO of Pink Stork, Certified Health Coach, INHC
What is PMOS, and why was PCOS renamed?
In May 2026, polycystic ovary syndrome (PCOS) was formally renamed polyendocrine metabolic ovarian syndrome, or PMOS, following a global consensus process published in The Lancet. The new name reflects the hormonal, metabolic, and ovarian features of the condition, correcting a decades-old label that implied ovarian cysts most people with the condition never actually have. If you already have a PCOS diagnosis, nothing about your care changes today. Only the language used to describe it does.
The name changed in May 2026, here is what happened
On May 12, 2026, a paper led by researcher Helena Teede and colleagues was published in The Lancet, announcing the outcome of what the authors called a rigorous, multistep global consensus process.1 The effort involved 56 academic, clinical, and patient organizations and drew on survey responses and workshop feedback from more than 14,000 people with the condition and health professionals across every world region.
The Endocrine Society, one of more than 50 patient and professional groups involved, described the change as an effort to improve diagnosis and care for a condition that affects roughly 1 in 8, or more than 170 million, women worldwide.2
Why "polycystic ovary syndrome" was always a misleading name
The word "polycystic" suggests ovarian cysts, but that is not quite accurate. What actually shows up on an ultrasound in this condition is a higher than typical number of small, immature follicles, not cysts in the clinical sense. Many people who meet the diagnostic criteria do not have this ultrasound finding at all, and plenty of people without the condition have ovaries that look similar on imaging.3
This mismatch between the name and the underlying biology has real consequences. It has contributed to confusion at diagnosis, an outsized focus on the ovaries instead of the condition's broader hormonal and metabolic features, and, for some patients, a sense that their diagnosis was not being taken seriously because they did not have "cysts" in the way the name implies.
What PMOS actually stands for, and what it captures that PCOS did not
Each part of the new name was chosen to represent a piece of the condition that the old name left out:
- Polyendocrine: the condition involves multiple interacting hormone systems, including insulin, androgens, and neuroendocrine hormones, rather than being isolated to the ovaries.
- Metabolic: features like insulin resistance and increased long-term risk for type 2 diabetes and cardiovascular disease are part of the condition itself, not separate issues.
- Ovarian: the connection to ovulatory disturbances and fertility remains, since that link is still a defining feature for many patients.
Supporters of the change say it opens the door to research funding and clinical guidelines that treat the condition as the multisystem disorder it is, rather than framing it primarily as a gynecological issue.
Does this change your diagnosis or treatment? (No, here is why)
A name change does not rewrite your medical history or your treatment plan. If you were diagnosed with PCOS last year, you still have the same condition this year. What is different is the terminology researchers, professional organizations, and eventually your medical records will use to describe it.
"What are the things that you can gain from optimizing your health?"
— Dr. Tosin Odunsi, MD, MPH, FACOG, Obstetrics and Gynecology Physician
That question is worth sitting with here. A more accurate name does not erase your history with this condition, but it can change how clearly you and your care team talk about it, and clearer conversations tend to lead to better care.
"Every woman deserves clarity about her own body, not confusion. Understanding what is happening inside you, in language that finally makes sense, is not a small thing. It is the start of feeling truly seen."
— Amy Suzanne Upchurch, Founder and CEO of Pink Stork
Melanie Cree, a pediatric endocrinologist at the University of Colorado Anschutz Medical Campus and one of two United States based pediatric endocrinologists involved in the consensus process, has said the point of the rename is to finally reflect the full reality of what patients experience, not to relabel the condition for its own sake.4
What to expect going forward (paperwork, providers, insurance)
Expect a transition period rather than an overnight switch. "PCOS" is likely to remain on medical records, insurance forms, and prescriptions for some time while clinical guidelines, medical education, and international disease classification systems catch up. If your provider still uses "PCOS," that does not mean they are behind on your care. It is completely reasonable to ask your provider which term they are using and whether anything about your monitoring or treatment plan should change alongside the terminology (in most cases, it will not).
Frequently asked questions
Is PMOS a new or different condition from PCOS?
No. PMOS is a new name for the same condition previously called PCOS. Nothing about the underlying biology changed, only the terminology used to describe it.
Will my medical records still say PCOS?
Likely yes, at least for a while. Clinical guidelines, insurance systems, and disease classification codes are expected to transition to the new name gradually rather than all at once.
Does the new name change how PCOS or PMOS is treated?
No. Treatment decisions are based on your individual symptoms, labs, and goals, not on which name appears on your chart.
Why did it matter enough to change the name at all?
The old name implied ovarian cysts that most patients do not actually have, and it obscured the condition's hormonal and metabolic features. Advocates say this contributed to delayed diagnosis, fragmented care, and reduced research funding.
Who decided on the new name?
The name emerged from a multistep global consensus process involving 56 academic, clinical, and patient organizations, with input from more than 14,000 patients and health professionals worldwide, published in The Lancet in May 2026.
Where can I learn more about what this means for my own diagnosis?
Start with your own care team, and see the related articles below on diagnosis delays, the mental health connection, insulin resistance, and fertility, each of which addresses a different piece of living with this condition day to day.
Related reading: why PCOS (PMOS) diagnosis takes so long, the PCOS (PMOS) and anxiety connection, insulin resistance in lean women with PCOS (PMOS), and what the fertility research actually shows.
This article is for general educational purposes and is not a substitute for personalized medical advice. Always consult your healthcare provider about your own diagnosis, records, and treatment plan.
