Lean PMOS: Why the Diagnosis Gets Missed Without Weight Gain

📱 Send Us a Text Message! We’d love to hear from you! Please include your name and email address so we can reply. Don’t worry — this won’t sign you up for our email list. We’ll only use your info to respond to your question. Many people picture PMOS (polyendocrine metabolic ovarian syndrome, formerly known as PCOS) as a condition tied to weight gain. But the diagnostic criteria never mention body size at all, and a significant number of people with PMOS have a completely normal BMI. In part two of our PMOS Awareness series, Dr. Patil-Sisodia breaks down “lean PMOS”: what it looks like, why it is so often missed, and why the metabolic risk is just as real even when the outside doesn't show it. In This Episode Why PMOS became associated with a specific body type, and why that picture was never the diagnosis itself The three actual diagnostic criteria: irregular or anovulatory cycles, elevated androgens (DHEAS, testosterone), and polycystic ovarian morphology on ultrasound What lean PMOS symptoms look like: irregular periods, acne, facial and body hair growth, scalp thinning “Normal weight obesity”: how insulin resistance and visceral fat can hide behind a normal-looking exterior The three-part pattern that causes lean PMOS to slip through the cracks in clinical practice Why an undiagnosed lean PMOS patient loses out on cardiometabolic monitoring, not just a menstrual explanation What needs to change: for clinicians, dropping body size as a screening filter; for patients, presenting symptoms as a pattern instead of one at a time Timestamps 00:00 | Welcome to Clearly Hormonal 01:01 | Series Setup: Lean PMOS 02:09 | Why PMOS Has a Body Type 02:42 | Diagnosis Criteria, Not Weight 03:39 | Lean PMOS Symptoms 04:05 | Hidden Insulin Resistance 05:01 | Why Lean PMOS Gets Missed 06:51 | Why Diagnosis Matters 08:05 | What Should Change 09:24 | Wrap Up and Next Week 10:03 | Mini Course Announcement Coming up next week: Episode three of the series looks at treatment, including where GLP-1 medications and other weight management tools fit into PMOS care, and who they actually make sense for. Sign up for the newsletter at eastsidemm.com/newsletter, and follow along on Instagram or TikTok @drpatilsisodia. This podcast is for education, not personalized medical advice. Please discuss anything you hear here with your own healthcare team. Thanks for listening. Find more info about Clearly Hormonal on the website or Instagram.