Polycystic ovary syndrome ( #PCOS) was officially renamed Polyendocrine Metabolic Ovarian Syndrome ( #PMOS) on May 12, 2026,. This change, published in The #Lancet and announced at the European Congress of Endocrinology, followed a rigorous 14-year global consensus process. The update aims to reduce stigma, improve diagnosis, and accurately reflect the condition's complex, multi-system nature beyond just the ovaries.
This is huge news for women, as it’s estimated that up to a third of women experience some PMOS symptoms. The previous nomenclature meant that many women were not being diagnosed correctly. As a matter of #bioethics of women’s treatment, this is a big sea change. As to how it changes medical professional’s approach, we will have to determine.
The Lancet:
https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(26)00717-8/fulltext
The Endocrine Society: https://www.endocrine.org/news-and-advocacy/news-room/2026/pcos-name-change
