22/09/2026
Polycystic O***y Syndrome is now officially Polyendocrine Metabolic Ovarian Syndrome, or PMOS, following a change published in The Lancet in May 2026 ✅
Australian researcher Professor Helena Teede at Monash University led the change, the result of 14 years of global research involving more than 22,000 patients and clinicians.
Diagnosis still relies on the same core criteria.
Irregular periods, signs of excess androgens, and ovarian appearance on ultrasound, with two of the three needed for diagnosis.
What has changed is the framing. The old name centred the condition on ovarian cysts and missed the hormonal and metabolic sides entirely, despite up to 13 per cent of women of reproductive age being affected and an estimated 70 per cent remaining undiagnosed.
If irregular periods, acne, excess hair growth or unexplained weight changes sound familiar, it is worth raising with your GP, under either name.
This is general information and does not replace individual medical advice. Speak with your doctor about your own circumstances.
To learn more, head to www.youngstreetmedical.com.au
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