NEWS: Polycystic Ovary Syndrome (PCOS) has officially been renamed Polyendocrine Metabolic Ovarian Syndrome (PMOS), effective May 2026. 

CONTEXT

This change follows a 14-year global effort to accurately reflect that the condition is a complex metabolic and hormonal disorder, not merely an ovarian disease, aiming to reduce stigma and speed diagnosis.

Key Reasons for the Change to PMOS

·         Scientific Accuracyà The term “cysts” was considered misleading because the condition does not involve abnormal ovarian cysts. Instead, many affected individuals have arrested follicular development that appears cyst-like on ultrasound.

·         The new name reflects the disorder’s broader endocrine, metabolic and ovarian dysfunction, including insulin resistance, hormonal imbalance and reproductive abnormalities, rather than portraying it solely as a gynaecological disorder.

·         Affecting one in eight women globally, and 70% of affected individuals remaining undiagnosed

·         The reclassification aims to reduce delayed diagnosis and ensure patients receive holistic treatment for hormonal and metabolic abnormalities.

·         In India, the condition affects an estimated 16-18% of women.

·         The inclusion of "metabolic" in the name is critical for the Indian population, which is linked to the "thrifty genotype" hypothesis - a genetic predisposition to store energy efficiently that increases the risk of obesity and Type 2 diabetes.

Polyendocrine Metabolic Ovarian Syndrome  

·         It is a common, chronic, and complex disorder affecting women of reproductive age. 

·         Defined as a multifaceted endocrine and metabolic condition characterized by high androgen levels, irregular ovulation/periods, and systemic metabolic issues, rather than just ovarian cysts.

·         Development of the disorder is linked to genetics, neuroendocrine disruptions, and modifiable factors such as sedentary lifestyles, poor diet, and obesity. 

·         The condition is primarily identified by chronic anovulation, with symptoms including irregular periods, hirsutism (excessive hair growth), and weight gain. 

·         While synthetic drugs like Metformin and Oral Contraceptive Pills (OCPs) are standard, their side effects have prompted a significant research shift toward traditional and herbal medicines