PMOS: A New Way Forward: Why PCOS Was Renamed and What It Means for Hormones, Health, and Everyday Life

by Claire Ryan

For years women diagnosed with PCOS, or Polycystic Ovary Syndrome, were often left wondering why their symptoms reached far beyond their ovaries, from irregular cycles and infertility to acne, weight gain, fatigue, and brain fog.

Now, that understanding is changing. Renamed PMOS, or Polyendocrine Metabolic Ovarian Syndrome, this condition is increasingly recognized as a whole-body disorder involving hormones, metabolism, insulin resistance, cardiovascular health, sleep, and long-term wellbeing.

A New Way Forward is a clear, grounded guide to what the name change means and how it may shape diagnosis, treatment, and everyday care.

Inside, you’ll

Why PCOS was renamed and what PMOS means for diagnosis and careHow insulin resistance may be driving many of your most frustrating symptomsWhy PMOS looks different from woman to woman and why so many were dismissed for yearsThe latest diagnostic thinking, including AMH blood testing as an emerging alternative to ultrasoundWhat screenings, labs, and conversations to bring to your next appointmentEvidence-based approaches to medications, supplements, and sustainable lifestyle strategiesHow PMOS affects fertility, perimenopause, menopause, and beyond
Written without wellness hype or unnecessary medical jargon, A New Way Forward helps readers make sense of a rapidly changing area of women’s health research and offers a modern framework for living well with PMOS.

128 pages, Kindle Edition

Published May 19, 2026

About the author

Claire Ryan is an Irish author, now living in Vancouver BC. She originally wanted to just write fantasy novels for a living, but was told from a very young age that she should do something 'practical'.

That turned into a degree in Geology, a postgrad in computers, and eventually a large dose of experience and technical skills in everything from data analysis to graphic design to marketing.

Her day job is web programming.

Reviews

[Meg Upp]

My biggest takeaway from this (quick!) read is that the change from PCOS to PMOS highlights how broad and complicated the condition is - a huge shift away from the simplified Rotterdam criteria - to allow providers to treat it as the metabolic disease that it is as opposed to just an “ovaries” issue. With the name change from PCOS to PMOS, they are addressing how there are actually SEVERAL presentations of the disease, historically leading to misdiagnosing/undiagnosing. It highlights the need to address the disease at the organismal level as opposed to symptom level. Great book for the PMOS ladies out there!