You may have never heard of it, but insulin resistance is the most important concept for those who care about their health.
Let me quickly explain it, in a simplified way:
First: it’s easier to understand insulin resistance as a continuum from excellent to very poor metabolic health.
Someone who is in excellent metabolic health is what’s called “insulin sensitive”
They almost surely have low body fat levels and:
-Low triglycerides
-Normal or higher HDL
-A1C in the normal range
Their fasting blood sugar (from blood work, not from a CGM, which is a different thing) is also going to be in the normal range
Fasting insulin levels would also be in the normal range.
When someone doesn’t “pass” one of the above “tests”, so to speak, we can interpret that as being a sign they’re almost surely not in excellent metabolic health.
If having low body fat levels (and good body composition) and optimal blood work in key areas signals that someone is in excellent metabolic health…
Then having type 2 diabetes requiring insulin (and potentially other drugs) is probably the most clear-cut signal that someone is currently in very poor metabolic health.
But there’s, of course, a big gap between those extremes, and the truth is, most adults are somewhere in this gap.
Fewer than 10% are in excellent metabolic health.
And something like 12-13% of adults have T2D and require insulin.
The ideal state is insulin sensitivity.
One of the next noteworthy states would be insulin resistance (without having T2 diabetes).
Then you’d have T2D, and then more advanced states, all the way to T2D requiring insulin, and the worst possible health markers on top of that.
The moral of the story could be, to be in excellent metabolic health means to be as far away from type 2 diabetes as humanly possible.
Type 2 diabetes is, contrary to what many believe, a very serious disease that increases the risk of many bad health outcomes.