Polycystic Ovary Syndrome has been renamed Polyendocrine Metabolic Ovarian Syndrome after a 14-year global effort involving experts, patients and more than 50 patient and professional organizations. The change was published today in The Lancet and is set to be fully implemented in the 2028 International Guideline update.
The condition affects 1 in 8 women, or more than 170 million women worldwide, and the new name is meant to better reflect what researchers say is a complex disorder rather than a problem defined by ovarian cysts. Patient groups, clinicians and researchers contributed more than 22,000 survey responses and took part in multiple international workshops before agreeing on the revised term.
Professor Helena Teede, who has been central to the renaming process, said there is actually no increase in abnormal cysts on the ovary in the condition, and that the diverse features of the disorder had often been underappreciated. She said it was heartbreaking to see the delayed diagnosis, limited awareness and inadequate care that affected people living with the condition.
The old name, PCOS, has long been tied to confusion about cysts and ovaries, even though researchers say that misunderstanding contributed to missed diagnoses and poor treatment. That gap between the label and the science is what the renaming effort was trying to close. The group behind the change said the agreed principles included patient benefit, scientific accuracy, ease of communication, avoidance of stigma, cultural appropriateness and a clear plan for implementation.
Teede said the change was a critical step toward recognition and better long-term outcomes, adding that international guidelines had already improved awareness and care but that a name change was the next necessary move. The rollout will not happen all at once: a three-year transition period is being backed by an international education and awareness campaign so clinicians and patients can adapt before the new terminology becomes standard in 2028.
For people who have spent years fighting for answers, the renaming is more than a cosmetic update. It is an official acknowledgment that the old term obscured the condition’s complexity, and the people who live with it now have a name that matches the science.
