As of May 2026, Polycystic Ovary Syndrome (PCOS) has been officially renamed Polyendocrine Metabolic Ovarian Syndrome (PMOS) following a global consensus published in The Lancet by leading international endocrine and reproductive health organizations. The new name reflects the condition's systemic, insulin-resistant nature. Most patients still search for it as PCOS — throughout this guide we use PMOS (PCOS) so both names remain clear. Precision hormone replacement therapy is also reshaping perimenopausal care.
PMOS (formerly PCOS) — What Changed and Why
In May 2026, an international consensus published in The Lancet officially renamed PCOS to PMOS (Polyendocrine Metabolic Ovarian Syndrome). The new name emphasizes insulin resistance, androgen excess, and metabolic dysfunction rather than just ovarian cysts — many women diagnosed under the old criteria never had cysts at all. Diagnostic work-up now routinely includes fasting insulin, HOMA-IR, lipid panel, LH/FSH, SHBG, free testosterone, and pelvic imaging. The prior name PCOS remains widely used by patients and search engines, and stays clinically valid during the transition.
Inositol vs Metformin
Myo-inositol + D-chiro-inositol (40:1 ratio) improves ovulation and insulin sensitivity with an excellent tolerability profile. Metformin remains first-line for higher metabolic risk. Many patients use both under supervision.
Perimenopause & Precision HRT
For symptomatic women within 10 years of menopause and no contraindications, transdermal estradiol plus micronized progesterone (with progesterone timing tuned to sleep and cycle) reduces vasomotor symptoms, protects bone, and may support cardiometabolic health.
Signs of Low Progesterone
Common signs include short luteal phase, spotting before periods, insomnia in the second half of the cycle, anxiety spikes, and worsening PMS in the late 30s/early 40s.
Frequently Asked Questions
Do I still get diagnosed with PCOS if I don’t have cysts?
This content is educational and does not replace individualized medical advice. Please consult an endocrinologist for personal guidance.
Sources and content history
Author / credited medical reviewer: Irina C. Delgado Varela, MD
Editorially updated: . Original publication date has not been recorded. Clinical review date has not been recorded.