The ovaries do not have cysts. They never did. They have arrested follicles, egg-producing structures that stopped developing and lingered. Polycystic ovary syndrome got its name anyway, and the misnomer has persisted for nearly a century, long enough to bury the experience of the women it was supposed to describe.
One in eight women will develop PCOS. That is the number that should anchor everything else. It affects up to 13% of reproductive-age women globally, according to the World Health Organization, and the WHO estimates that roughly 70% of those cases go undiagnosed. Women routinely see multiple doctors over years before getting an answer. When they are finally diagnosed, they are often told their fertility struggles are stress, their metabolic symptoms are separate problems, their pain is normal. PCOS adopted its current name in the 1990s, replacing the original Stein-Leventhal syndrome, without changing the diagnostic delays or the fragmentary care that follows.
Now the medical world is trying to fix the name. Norman et al. published a paper in Fertility and Sterility in 2023 proposing two alternatives: Reproductive Metabolic Syndrome, or as a less-preferred option, Polygenic Cardiometabolic Ovarian Syndrome. A year later, Yildiz et al. published in Nature Reviews Endocrinology arguing the condition is fundamentally metabolic, with ovarian dysfunction as a downstream consequence of insulin resistance and systemic metabolic dysfunction rather than the root cause. That paper went viral by academic standards: 1.6 million views on X, according to STAT News, a reach scientific papers almost never see.
The science behind the rename is solid. PCOS is diagnosed using the Rotterdam criteria, which require two of three: irregular ovulation, excess male hormones, or the characteristic egg morphology on ultrasound. Roughly one in three women have the egg morphology without having the disorder itself, which is part of why the diagnosis hides in plain sight. A 2003 family study first established something stranger: more than half of fathers and mothers of women with PCOS had prediabetes or diabetes, and most brothers and sisters had insulin resistance. The metabolic pattern was there from the beginning; the reproductive symptoms just appeared first. Children as young as six years old show metabolic changes associated with PCOS genetic risk variants, well before puberty, according to research at Boston Children's Hospital.
Jia Zhu and colleagues at Boston Children's Hospital pushed further. Analyzing genetic data from more than 176,000 men in the UK Biobank, they found that men with elevated PCOS genetic risk scores had increased odds of obesity, type 2 diabetes, and cardiovascular disease. The same variants that increase PCOS risk in women carry metabolic consequences in men. Yildiz has acknowledged the male biology is plausible but says more markers are needed before it becomes a clinically actionable diagnosis. Androgenetic alopecia affects roughly 30% of men, which is too common a signal to stand alone. If a male PCOS counterpart exists, it will need the kind of longitudinal genetic and metabolic tracking that is still years from routine care.
Helena Teede, who leads the woman's health unit at Monash University in Melbourne and has studied PCOS for decades, sees the naming debate as a proxy for a deeper failure. "One in eight women are affected by this, and quite profoundly, and to have this then sidetracked... that is not going to change the very significant impact and neglect that this condition has had in women health for a long time," she told STAT News. Her concern is not that the science is wrong but that renaming a women's condition as metabolic risks trading one dismissal for another.
The rename has strong backing. A 2025 survey published in eClinicalMedicine by The Lancet found that 86% of women with PCOS and 76% of health professionals supported renaming, believing it would better reflect the condition's biology and reduce the diagnostic confusion that contributes to the estimated 70% of cases that go undiagnosed worldwide. An ABC News investigation in August 2025 found that a formal rename was expected by the end of 2026, following a global survey of patients and clinicians that drew more than 6,500 responses. The February 2026 announcement window came and went without a formal decision, and the end-of-2026 target is already under pressure. Changing SNOMED CT, the clinical terminology system used in electronic health records worldwide, requires navigating an international governance process. The Systematized Nomenclature of Medicine receives up to 2,000 requests to amend nomenclature every year and satisfies about 95% of change requests, according to STAT News. ICD codes, used for billing and insurance, are updated on separate schedules in different jurisdictions. Historically, major terminology updates take years of implementation even after the clinical community has reached consensus.
What the rename cannot fix is the women who are already here. Teede's warning deserves weight. A new name does not undo decades of dismissal, missed diagnoses, and fragmentary care. PCOS patients routinely report seeing multiple doctors over years before getting an answer, and even after diagnosis often feel their metabolic and reproductive concerns are treated as separate problems rather than parts of the same underlying biology. A metabolic frame might get more family doctors to take insulin resistance seriously at a routine physical. It might also mean gynecologists and fertility specialists defer to metabolic management and leave the reproductive harm unaddressed.
A rename is coming. What PCOS gets called shapes how researchers compete for funding, how doctors are trained to think about it, and how seriously the condition is taken at the policy level. But names do not treat patients. The women who have been waiting years for a diagnosis, or who have been told their fertility struggles are simply stress, need more than a corrected label. They need the medical system to take seriously a condition that affects one in eight women and has been hiding in plain sight since before their grandmothers were born.
