From my research, you can still be insulin resistant and have normal HbA1c levels. I'll collate some research briefly below:
Insulin resistance and diabetes are related but not the same. If you have insulin resistance, your blood sugar is still within a normal range.
https://www.webmd.com/diabetes/insulin-resistance-syndrome
If you develop insulin resistance, the cells in your muscles, fat, and liver are unable to process insulin normally, so the glucose continues to build up in your blood.
The pancreas generates more insulin to little or no effect, while your body stores the sugar in your liver and muscles. When there is no room for more, the sugar is converted into body fat.
Insulin resistance is a precursor to prediabetes and, eventually, type 2 diabetes.
https://www.healthline.com/health/diabetes/insulin-resistance-symptoms#definition
If your doctor is saying your A1c and blood glucose levels are normal and you’re not insulin resistant, do yourself a favor and read this post! The typical protocol of testing for insulin resistance isn’t telling us the full story.
WEIGHT DOES NOT CAUSE INSULIN RESISTANCE!
You may have heard it’s estimated that 65-80% of those with PCOS have insulin resistance. I’ll say this a little louder for the people in the back and for the fatphobic crew in particular, it appears to be independent of weight. Weight gain does not appear to cause insulin resistance, rather they seem to move together in a sort of cycle. Effectively, the more weight we gain, the more insulin resistance we have, and the more insulin resistance we have, the more weight we gain. They perpetuate each other, but don’t necessarily cause each other.
SO IF WEIGHT DOESN’T CAUSE INSULIN RESISTANCE, WHAT DOES?
While research is still emerging to understand the root cause of insulin resistance, we are definitely starting to catch up. Theories range from underlying inflammation, physiological stress, oxidative stress, to potentially an undiscovered hormone causing our bodies to become insulin resistant. So, if your doctor is telling you that weight loss is the answer to all of your problems, tell them to think again. According to the CDC, you do not have to be overweight to have insulin resistance. A number on the scale, or what you look like, does not indicate insulin resistance! I will mention, though, that since insulin resistance and weight appear to move in tandem, untreated insulin resistance can continue to feed the cycle of weight gain and worsen insulin resistance. But it’s the balanced, healthy measures we take to lose weight, not drastic measures, that typically help insulin resistance
INSULIN RESISTANCE IS REALLY HARD TO TEST FOR!
With how often we hear about the omnipresence of insulin resistance, you’d think it would be super easy to test, right? Well that’s what I thought, and I couldn’t have been more wrong! Currently, the most accurate way to test for insulin resistance uses something called the hyperinsulinemic euglycemic glucose clamp technique. It directly estimates insulin resistance as it measures how effective insulin is in promoting glucose utilization. It’s expensive, requires insulin infusion and repeated blood sampling. It is impractical, so doctors have to use surrogate methods to make their best guess as to whether someone has insulin resistance or not. There are even mathematical algorithms that have been suggested as a method to estimate insulin resistance, but procedures have not been standardized.
More info on this link with some other testing methods but not sure how accessible these tests are.
https://www.teal-health.org/blog/insulinresistance
I imagine many of us who have struggled with binge eating and yoyo dieting are insulin resistant, especially if keto and fasting gave your best weight loss before Mounjaro.
I find all of this absolutely fascinating, it shows how we were fighting a losing battle with our biology (I did an emotive post about this here with some podcast links which helped me begin connecting the dots on all of the above!).
Just to clarify, I was posting on these threads under a different username since April but don't want to connect to that name and out myself as I probably said more in here anonymously than id want people IRL to know! So yes I am directing people to my Insta but that's not the only reason I'm here (and also saves me typing up what ive already explained in a post)! This has been my daily read since about thread 3 when FlappyFish was having her stall and I first went down the rabbit hole of what a stall actually is and we had the perosn randomly sharing their Voy code every 10 posts! X