In this blog, Dr. Sarah Pederson explains why the name changed, how PMOS is diagnosed, and why treatment should be personalized.
🧬 Why Was PCOS Renamed PMOS?
The term polycystic ovary syndrome led many people to believe the condition involved harmful ovarian cysts.
However, the “cysts” seen on an ultrasound are typically small follicles that have not fully matured. The new name better represents the condition’s effects on the endocrine, metabolic, ovarian, and reproductive systems.
The diagnostic criteria have not changed. Only the name and framing have been updated.
⚠️ Common Signs of PMOS
PMOS can look different in every woman. Possible signs include:
- Irregular or absent periods
- Long or unpredictable cycles
- Difficulty ovulating
- Elevated testosterone
- Acne
- Unwanted facial or body hair
- Scalp hair thinning
- Weight or metabolic changes
- Insulin resistance
- Elevated cholesterol
- Difficulty conceiving
Not everyone with PMOS has insulin resistance, elevated testosterone, weight gain, or multiple follicles visible on an ultrasound.
🧪 How Is PMOS Diagnosed?
A PMOS diagnosis generally requires two of the following three findings:
- Irregular cycles or ovulatory dysfunction
- Clinical or laboratory signs of elevated androgens
- Multiple small ovarian follicles seen on ultrasound
A comprehensive evaluation may also include:
- LH and FSH
- Total and free testosterone
- DHEA-S
- Sex hormone-binding globulin
- AMH
- Fasting glucose and insulin
- Hemoglobin A1c
- Cholesterol and triglycerides
- Thyroid testing
- Pelvic ultrasound
- Continuous glucose monitoring when appropriate
These results should be evaluated alongside your symptoms, cycle patterns, health history, and personal goals.
🍽️ Why a Low-Carbohydrate Diet Is Not Always the Answer
Women with PMOS are often told to eliminate carbohydrates and sugar, but this approach is not appropriate for everyone.
Some women have insulin resistance, while others may already be eating too little or restricting carbohydrates excessively. Nutrition should be based on each person’s blood sugar response, hormone levels, symptoms, and lifestyle.
The goal is to find the right balance of protein, fiber, carbohydrates, and healthy fats without unnecessary restriction.
🩺 Personalized Treatment for PMOS
There is no single treatment plan for PMOS.
Depending on the patient, treatment may include:
- Personalized nutrition changes
- Blood sugar monitoring
- Consistent sleep and exercise
- Stress management
- Supplements
- Medication
- Ovulation support
- Hormone monitoring
- Surgery in select cases
A complete evaluation can help identify which areas need support and guide a treatment plan that fits your body.
🤰 PMOS and Pregnancy
Managing PMOS before conception and during pregnancy is important because the condition may be associated with a higher risk of:
- Miscarriage
- Gestational diabetes
- High blood pressure
- Preeclampsia
- Cesarean delivery
- Preterm birth
- Fetal growth concerns
Preconception care can help identify and address hormonal, metabolic, nutritional, and ovulatory concerns before pregnancy.
Weekly Challenge
Determine whether you know when you ovulate and whether your cycles are predictable.
If you have irregular cycles or possible signs of PMOS, ask your healthcare provider whether you should evaluate:
- AMH
- LH and FSH
- Testosterone
- Fasting glucose and insulin
- Hemoglobin A1c
- Pelvic ultrasound
- Continuous glucose monitoring
Key Takeaways
- PCOS is now called polyendocrine metabolic ovarian syndrome, or PMOS.
- PMOS is a lifelong hormonal and metabolic condition.
- The “cysts” associated with the previous name are typically small ovarian follicles.
- PMOS can affect ovulation, fertility, blood sugar, skin, hair, mood, and long-term health.
- Not everyone with PMOS has insulin resistance, elevated testosterone, or weight gain.
- A low-carbohydrate diet is not appropriate for every patient.
- Testing and treatment should be personalized to each woman’s symptoms, hormones, metabolism, and goals.
Resources & Next Steps
If you are experiencing irregular cycles, difficulty ovulating, elevated testosterone, insulin resistance, or other possible signs of PMOS, Vera Health & Fertility can provide a comprehensive evaluation and personalized treatment plan.
