One in Eight UK Women Affected by Common Endocrine Disorder
webnewsinsider.com · post 61911 · 2026-07-21
LONDON, July 21 — Against the backdrop of routine medical consultations and epidemiological surveys, a condition that affects a significant portion of the female population of reproductive age in the United Kingdom is drawing fresh attention from clinicians and public-health experts. PMOS impacts around one in eight women in the UK, or approximately 12.5 percent of women of reproductive age.
That figure places the condition as one of the more common endocrine disorders encountered in primary care, though its visibility in public discourse remains notably lower than its prevalence might suggest. The statistic — one in eight women — is derived from studies using widely accepted diagnostic frameworks.
In the UK, clinical guidelines for the management of PMOS were issued in 2013, with an update following in 2023. These guidelines provide the standard of care for clinicians across the National Health Service and set out pathways for diagnosis, symptom management and long-term monitoring. But the real picture is more complicated.
Many women experience mild or no symptoms and may not seek medical attention at all. That reluctance, or lack of awareness, contributes to a persistent problem: underdiagnosis.
The condition is underdiagnosed, meaning the true number of women affected could be higher than the 12.5 percent figure suggests.
The Global Picture
Similar prevalence rates are reported internationally, with estimates ranging from 5 percent to 15 percent depending on the diagnostic criteria applied. The variation is not surprising, given that different studies use different thresholds for what constitutes the condition. The most widely used diagnostic standard worldwide is the Rotterdam criteria, established in 2003.
That set of parameters — developed at a consensus conference — requires the presence of two out of three key features, and has become the benchmark for clinicians and researchers across Europe, North America and beyond. What is at stake in these numbers is not merely epidemiological curiosity.
A condition that affects such a large proportion of women of childbearing age carries implications for reproductive health, metabolic risk and long-term well-being. The wider picture, however, remains incomplete precisely because of underdiagnosis.
Diagnostic Criteria and the Underdiagnosis Challenge
The Rotterdam criteria (2003) remain the most widely used diagnostic standard internationally. They offer a flexible framework, but that very flexibility can lead to the varying prevalence figures seen across different populations. Some women meet the criteria yet have no overt symptoms; others suffer significant symptoms but do not fit neatly into the diagnostic boxes.
In the UK, guidelines issued in 2013, updated a decade later, attempt to standardise care and improve recognition. Yet the persistence of underdiagnosis suggests that more awareness is needed — among clinicians and among women themselves.
The condition may be common, but it is not always recognised as such. Consult your doctor for medical advice.