After a decade of international research, the medical community has formally recast polycystic ovary syndrome, or PCOS, as more than a gynecological issue. The condition has been renamed PMOS, for Polyendocrine Metabolic Ovarian Syndrome, to reflect that it is a multi-system metabolic disorder that can help explain obesity, excess hair growth and diabetes. The change was presented last month at the European Congress of Endocrinology in Prague and later published in The Lancet.
The decision followed surveys, discussion groups and consultations with more than 22,000 people, including doctors, researchers and women living with the syndrome. They argued that the old name was misleading and suggested the problem was only about the ovaries. Lead researcher Prof. Helena Teede of Monash University in Australia said the previous term created a false narrative and reduced a complex, long-term hormonal disorder to confusion about “cysts.” She said the new name better captures the condition’s systemic and persistent nature.
Dr. Galina Shnarkman, an endocrinology and internal medicine specialist and medical director at MEDBALANCE, said the new terminology better reflects the syndrome’s complexity and its links not only to reproduction but also to metabolism, insulin resistance, weight gain and a higher risk of type 2 diabetes and other metabolic diseases. She noted that researchers have found the issue is not actually ovarian cysts, but follicles that do not mature properly. In her view, years of focusing on the ovaries caused the broader picture to be missed.
According to Shnarkman, diagnosis usually begins when a woman seeks help for irregular periods or fertility problems, but the clinical picture often includes acne, excess hair growth, hair loss, fatigue and difficulty maintaining a healthy weight. She said there will be no immediate change in practice, and the World Health Organization expects the transition to routine use within three years because it requires new disease coding, professional training, translations and cultural adaptation.
The article says women evaluated for infertility should now be assessed not only with ultrasound, but also with tests of female and male hormones, pituitary gonadotropins, insulin and broader sugar and lipid metabolism, including a glucose tolerance test when hormone problems are suspected. It also explains that excess insulin and insulin resistance are central to weight gain in PMOS, and that treatment relies on lowering body fat and improving insulin sensitivity through tailored nutrition and exercise, often including a diet richer in whole grains and protein, plus aerobic and strength training.
