Seven systems. One condition. Here is the map.
PCOS meant Polycystic Ovary Syndrome. Research now shows there are no actual cysts. What ultrasound sees are arrested follicles.
Polyendocrine Metabolic Ovarian Syndrome. A multi gland endocrine and metabolic condition that also involves the ovaries.
The international AE-PCOS Society with 56 partner organizations. Published in The Lancet, May 12, 2026.
Three year rollout. Full adoption in the 2028 International Guideline update. You will see both names in the clinic until then.
Disrupted LH and FSH signaling. Anovulation. The arrested follicles that ultrasound used to call cysts.
Up to 70% of women with PMOS have insulin resistance. It runs almost everything else.
The 'Polyendocrine' in PMOS is doing real work. Ovaries, adrenals, thyroid, hypothalamus, pituitary. All in the loop.
Excess androgens reach sebaceous glands and hair follicles. The earliest, loudest sign.
Women with PMOS have around 3x the risk of anxiety and depression. Inflammation, insulin, and hormone fluctuations all play a part.
The gut shifts in PMOS, then feeds back into insulin and androgens. Older PCOS frameworks missed this entirely.
The metabolic and cardiovascular risks are exactly why the medical community pushed for the rename.
Two minute screener. Not a diagnosis. Tells you what to start asking a doctor.
Take the screener