PMOS and insulin resistance
It explains why "metabolic" now sits in the middle of this condition's name, and why it was a mistake to leave it out for so long.
If one thing explains why the word "metabolic" now sits in the middle of this condition's name, it's insulin resistance.
What it actually means
Insulin's job is to move glucose out of your blood and into your cells. In insulin resistance, your cells respond to it less readily, so your body compensates by producing more. Blood sugar can look entirely normal for years while insulin levels quietly climb.
That extra insulin is the problem. It encourages the ovaries to produce more androgens, which feeds the acne, the unwanted hair growth, and the disrupted ovulation. This is how a metabolic issue becomes a reproductive one.
How common is it?
Estimates vary widely depending on how it's measured, published reviews put it somewhere between 35% and 80% of people with the condition. The honest answer is that it's common enough that it's worth asking about, and not so universal that everyone has it.
You can be slim and insulin resistant. Weight makes it more likely, but it doesn't decide the question.
Research consistently finds insulin resistance in lean people with the condition too, though prevalence figures for that group are all over the map. The practical implication is simple: a normal BMI is not a reason to skip metabolic screening, and plenty of people are wrongly reassured on exactly that basis.
Why it's worth knowing
Insulin resistance is the mechanism behind the raised long-term risk of type 2 diabetes and cardiovascular disease that comes with PMOS. Knowing whether you have it changes what gets monitored and what your clinician may suggest.
What to ask
Ask whether metabolic screening is appropriate for you, and what it would involve, typically fasting glucose, HbA1c, or a glucose tolerance test, alongside a lipid panel. Ask what should be rechecked and how often.
Treatment decisions belong with your clinician. What's genuinely in your hands is the record: when your energy dips, how your cycles behave, and what changes alongside them. That's the information that makes a fifteen-minute appointment count.
Quick answers
What is insulin resistance in PMOS?
In insulin resistance, your cells respond less readily to insulin, so your body makes more of it. The extra insulin encourages the ovaries to produce more androgens, which feeds acne, unwanted hair growth and disrupted ovulation.
How common is insulin resistance in PMOS?
Published reviews put it somewhere between 35% and 80% of people with the condition, depending on how it is measured. It is common enough to be worth asking about, and not so universal that everyone has it.
Can you be slim and have insulin resistance with PMOS?
Yes. Research finds insulin resistance in lean people with PMOS too, so a normal BMI is not a reason to skip metabolic screening.
What tests check for insulin resistance?
Ask your clinician whether metabolic screening is right for you. It typically involves fasting glucose, HbA1c or a glucose tolerance test, alongside a lipid panel.
Sources
PMOS symptoms: the full list
The symptoms that go beyond your cycle, including the ones rarely mentioned.