PCOS Is Now PMOS: Why This Name Change Matters

 After decades of being called Polycystic Ovary Syndrome (PCOS), one of the most common hormonal disorders affecting women is getting a new name: Polyendocrine Metabolic Ovarian Syndrome (PMOS).

This change, announced through a global consensus published in The Lancet, marks an important shift in how we understand and talk about this condition. University of Rochester Medicine experts Kathy Hoeger, MD, MPH, from Strong Fertility Center, and endocrinologist Olga Astapova, MD, PhD, explain what the new name means for diagnosis, treatment, and future research.

What Is PMOS?

PMOS stands for Polyendocrine Metabolic Ovarian Syndrome. The new name better reflects what happens in the body:

• “Polyendocrine” recognizes that multiple hormone systems are involved—not just reproductive hormones

• “Metabolic” highlights the condition's significant impact on metabolism, including insulin resistance and increased diabetes and cardiovascular risk

• “Ovarian” acknowledges the ovarian component

PMOS is a common condition that affects 1 in 10 women of reproductive age.

Why Was the Name Changed?

Healthcare providers and researchers felt that "Polycystic Ovary Syndrome" was misleading, as it didn't tell the whole story of the condition. The name highlighted ovarian cysts, which not everyone with PMOS develops. It also didn’t acknowledge the condition's broader metabolic and hormonal effects.

The global medical community pushed for this change to:

• Reduce stigma and confusion around the condition

• Emphasize the metabolic component, which is critical for long-term health management

• Improve early recognition and treatment by helping patients and providers understand the full scope of the condition

• Reflect current science that shows PMOS is a complex endocrine and metabolic disorder

How Common is PMOS and Why You Might Already Have It?

Polymetabolic Ovarian Syndrome (PMOS), formerly PCOS, is a common but very misunderstood condition. We're here to clear up this and other myths so patients can get the info and treatment they need.

Does the Name Change Affect Diagnosis or Treatment?

Over time, it may change diagnosis and treatment processes slightly.

What won’t change:

Providers will still look for the same combination of symptoms:

• Irregular periods

• Signs of elevated androgens (male hormones)

• Ovarian changes on ultrasound

What will change over time:

• Greater emphasis on metabolic screening: Expect more focus on checking blood sugar, blood pressure, and cardiovascular risk factors

• Earlier intervention: The new name may help providers recognize the condition sooner and start treatment earlier

• More holistic treatment plans: Treatment will address not just fertility and periods, but also long-term metabolic health

If you're already being treated for PCOS, continue following your provider's recommendations.

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PMOS Care at University of Rochester Medicine

Our specialists understand that PMOS affects every aspect of your health. We work with you to create a personalized treatment plan that addresses your unique needs and goals.