PCOS Has a New Name — And It's Long Overdue
If you or someone you love has been living with PCOS, there's important news you should know about. The condition formerly known as Polycystic Ovary Syndrome (PCOS) has officially been renamed Polyendocrine Metabolic Ovarian Syndrome — PMOS — a change more than a decade in the making.
Why the name change?
For years, patients and providers alike have struggled with a name that didn't tell the whole story. PCOS highlighted "cysts" and "ovaries," but the reality is far more complex. As noted by the Society for Endocrinology, researchers found there is no increase in abnormal ovarian cysts associated with this condition — meaning the original name was not only incomplete, but inaccurate. The result? Delayed diagnoses, missed treatment opportunities, and countless women left without the care they needed.
PMOS affects 1 in 8 women worldwide — more than 170 million people — and its true reach extends well beyond the ovaries. This is a hormonal and endocrine disorder that can affect weight, metabolism, mental health, skin, and the reproductive system all at once. The new name finally reflects that reality.
What does this mean for you?
The name PMOS was developed over 14 years of global collaboration, involving over 22,000 survey responses and input from 56 patient and professional organizations. This wasn't a change made in a boardroom — it was driven by patients and clinicians together, with the goal of reducing stigma, improving awareness, and ultimately improving care.
At Main Line Fertility, we've always taken a whole-person approach to treating this condition. Whether you came to us years ago with a PCOS diagnosis or are just beginning to explore your hormonal health, you’ll receive the same quality and depth of care.
The change to PMOS will be fully implemented with the 2028 International Guideline update, but the transition is already underway. You may hear your doctor use both names during this period — that's completely normal.
Questions? We're here.
If you have questions about PMOS, how it may be affecting your fertility, or what treatment options are available, our team is ready to talk. You don't have to navigate this alone.