PCOS Has a New Name & It Changes Everything

One of the most common hormonal conditions affecting women worldwide just got a new name and with it, a new lens through which to understand, diagnose, and treat it.

According to the World Health Organization, polycystic ovary syndrome (PCOS) affects an estimated 10 to 13 percent of reproductive-age women. That translates to more than 100 million women globally and it's a condition we see frequently among patients at The Lanby. As of this week, following a landmark global consensus study published in The Lancet, PCOS has been officially renamed polyendocrine metabolic ovarian syndrome, or PMOS.

This is more than a semantic update. It's a meaningful, science-backed reclassification that has the potential to transform how this condition is identified and cared for.

Why the Name Needed to Change

The old name was, in many ways, misleading. "Polycystic ovary syndrome" implies the condition is defined by cysts on the ovaries, but research has made clear for years that this characterization is both inaccurate and limiting. Many patients diagnosed with PCOS don't have ovarian cysts at all. What they do have is widespread hormonal and metabolic dysfunction, often identifiable through bloodwork showing elevated androgens, signs of insulin resistance, and other key hormonal markers.

Because the diagnostic framework leaned so heavily on ultrasound findings, millions of women were missed entirely. They were experiencing irregular periods, unexplained weight gain, fatigue, mood changes, and skin issues yet without visible cysts on imaging, their symptoms were overlooked, minimized, or misattributed. The name itself was contributing to diagnostic gaps.

The new name, PMOS, directly corrects this.

How the Renaming Came to Be

This wasn't a change made overnight. The renaming process, led by Professor Helena Teede at Monash University in Australia, engaged more than 22,000 stakeholders over 11 years, including patients, clinicians, researchers, and advocacy organizations across the globe. Over 50 patient and professional organizations participated, including the Endocrine Society.

The result was published in The Lancet and presented at the European Congress of Endocrinology in Prague. PMOS was chosen in a landslide over two other finalists, selected for its scientific accuracy, clarity, and ability to reduce stigma.

Critically, this name change also reflects years of women advocating for themselves, patients who pushed back on incomplete diagnoses, who sought answers beyond a single ultrasound, who knew something more systemic was going on. Their voices shaped this outcome.

What the New Name Actually Means

Each word in PMOS is intentional:

• Poly-endocrine — recognizes that multiple hormone systems are involved: androgens, insulin, neuroendocrine, and reproductive hormones, not just one organ
• Metabolic — acknowledges insulin resistance as a core feature of the condition, not a secondary concern
• Ovarian — retains the connection to common reproductive symptoms including irregular cycles, anovulation, and fertility challenges

Together, the name captures what research has been telling us for years: this is not simply a reproductive condition. It is hormonal, metabolic, and systemic.

How The Lanby Approaches PMOS

At The Lanby, our Care Team is genuinely excited about this change. We believe it has the potential to drive earlier diagnosis, broader screening, and care that finally treats the whole body, not just one organ or one symptom in isolation.

If you think you may have PMOS, we're here to help. Our approach goes well beyond a single test or imaging study. We conduct comprehensive hormone panels, assessing androgens, insulin markers, thyroid function, and more to get a complete picture of what's happening systemically. We also discuss insulin resistance, cardiovascular health, mental health, and reproductive goals, because with PMOS it’s all connected. 

This name change broadens the scope of care. At The Lanby, we've always believed in that broader scope and we go above and beyond to make sure no area of concern goes unexplored or unexplained.