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PCOS Renamed to Polyendocrine Metabolic Ovarian Syndrome Globally

At a glance

  • PCOS is now officially called polyendocrine metabolic ovarian syndrome (PMOS
  • The renaming was published in The Lancet on May 12, 2026
  • Surveys for the process included over 14,000 patients and professionals

The global medical community has adopted a new name for polycystic ovary syndrome, now known as polyendocrine metabolic ovarian syndrome (PMOS). This change follows a coordinated effort involving international organizations and experts.

The updated terminology was published in The Lancet after a consensus process that included academic, clinical, and patient groups. The announcement was made at the European Congress of Endocrinology in Prague.

Professor Helena Teede, who directs the Monash Centre for Health Research & Implementation, led the initiative to revise the condition’s name. The process included collaboration with 56 organizations and input from thousands of individuals affected by the condition as well as health professionals.

PMOS was selected as the new name to better represent the underlying endocrine and metabolic characteristics of the condition, rather than focusing on ovarian cysts. The previous name, PCOS, was considered less accurate in describing the full range of symptoms and features.

What the numbers show

  • More than 14,000 people and professionals participated in surveys for the renaming process
  • The condition affects over 170 million people worldwide
  • One in eight women globally is impacted by PMOS

The revised terminology is scheduled for full adoption by 2028, according to plans for updating international clinical guidelines. The transition period allows for changes in medical literature, education, and healthcare practices to reflect the new name.

The renaming process involved extensive consultation to ensure that the new terminology aligns with current scientific understanding and patient experiences. Organizations across multiple countries participated in the consensus effort.

The publication of the name change in a leading medical journal marks a formal step in the global adoption of PMOS. The process aimed to unify clinical practice and improve communication among healthcare providers and patients.

PMOS continues to be recognized as a widespread health concern, with its prevalence and impact documented in recent medical literature and health organization reports. Ongoing updates to guidelines and educational materials are expected as the new terminology is implemented worldwide.

* This article is based on publicly available information at the time of writing.

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