Insulin resistance is all about how well your body uses insulin, not how well it produces it. Your pancreas can be churning out huge amounts of insulin, but if your insulin resistance is high, your insulin receptors don't bind with the hormone properly to unlock the cells and let the glucose in. So, it takes a LOT of insulin to do the same job that a tiny amount would be needed for in a non-diabetic individual.
This is what the other forum poster was referring to. As you develop type 2 diabetes, your pancreas makes greater amounts of insulin to cope with your insensitivity. Your sugar levels will be normal-prediabetic for a time, but eventually the pancreas will be unable to make enough insulin to clear glucose from the blood properly and the individual becomes a full blown diabetic.
Exercise, losing weight, and some diabetic medicines help to reduce insulin resistance. Eating low carb/moderate protein/high fat lowers insulin demand, so you still might have high amounts of circulating insulin, but your blood sugar levels will be more normal.
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