PCOS Has a New Name (And It's a Big Deal!)
If you or someone you love has PCOS, here's some news worth pausing for: after more than a decade of global research, advocacy, and input from over 22,000 people, polycystic ovary syndrome officially has a new name.
It's now called Polyendocrine Metabolic Ovarian Syndrome (or PMOS).
One letter changed. But the meaning behind it? Everything.
A Personal Note From Our Founder
I have PCOS. I also have adenomyosis. And for most of my life, both have been met with the same response: a shrug, a dismissal, a "that's just how it is for some people."
So when I saw this news, I felt something shift. To see a condition that has been brushed off for so long - by clinicians, by the medical system, by society - finally being given more air time and more accurate language? It's genuinely heartening. It won't undo years of women being dismissed, but it's a step toward being taken seriously. And that matters.
So, Why the Change?
Despite its name, many people with the condition don't even have ovarian cysts, yet that's what the name implied for decades. That single misconception had real, lasting consequences. The term obscured the condition's diverse endocrine and metabolic features, contributing to delayed diagnosis, fragmented care, and stigma, while also limiting research and policy attention. The Lancet
In other words, a misleading name meant people weren't getting the right help, at the right time, for the right reasons.
What Does PMOS Actually Mean?
The new name does a lot more work. Let's break it down:
- Polyendocrine — recognises that this is a hormonal condition involving multiple endocrine (hormone-producing) systems, not just the ovaries
- Metabolic — acknowledges the significant metabolic impacts, including effects on weight, cardiovascular health, and insulin resistance
- Ovarian Syndrome — keeps the ovaries in the picture, because they are still part of the story — just not the whole story
PMOS is characterised by fluctuations in hormones, with impacts on weight, metabolic and mental health, skin, and the reproductive system. That's a much fuller picture than "ovarian cysts" ever painted. EMJ
Why This Matters for the 1 in 8
The condition is believed to affect up to 13% of reproductive-age women, causing symptoms including weight gain, acne, hirsutism, irregular and painful periods, and mental health issues — yet the World Health Organization estimates that 70% of people with the condition are undiagnosed.
That's millions of people dismissed, misunderstood, or simply never told what was happening in their own bodies.
The understanding of the disorder among scientists had changed, but the understanding among patients and doctors had lagged. As Rachel Morman, chair of PCOS charity Verity UK (and a patient herself), noted: there was still a large number of women and healthcare professionals who believed the condition was entirely about ovarian cysts. A name that tells the real story is a name that opens doors: to earlier diagnosis, better treatment, more research funding, and less shame.
This Was a Global, Community-Led Effort
This wasn't a change handed down from a committee in a conference room. After hearing from 22,000 people over 11 years, the new name was chosen — with 87 out of 90 voters (including doctors, researchers, patients, and advocates) supporting it immediately.
The process was led by Professor Helena Teede at Monash University in Australia, and involved more than 50 patient and professional organisations, including the Endocrine Society.
Australian patient and advocate Lorna Berry, who was part of the renaming process, said it best:
"This is about accountability and progress. It is about my daughters, their daughters, and the countless women yet to be born. We deserve clarity, understanding, and equitable healthcare from the very beginning." Endocrine Society
What Happens Next
The recategorising will include updates to clinical guidelines, medical education, and international disease classification systems, ensuring the new terminology is adopted consistently worldwide.
Change this big doesn't happen overnight — but it does start here. With awareness. With conversations. With people who care enough to say: the old way wasn't good enough.
A Note From Us
At Fri Period, we believe that knowledge about your body is one of the most powerful things you can have. Whether you're navigating a PMOS diagnosis, supporting someone who is, or just learning more about how hormones and cycles connect — you deserve accurate information, in language that actually reflects your experience.
If you suspect you might have PMOS (formerly PCOS), please speak with your GP or a specialist. This post is for informational purposes only and is not intended as medical advice.
