Can anyone explain to me what glucose tolerance is? If not could you direct me to a location that can? I am searching on the net but I keep getting alot of information about glucose tolerance testing but not what it is.

I was reading about Depo-Provera and in the warnings it stated changes in glucose tolerance.

Glucose tolerance means how your body clears sugar from in the blood. And how much glucose remains after insulin has done its job. It is related to insulin resistance and diabetes.

Impaired glucose tolerance definition, "a condition in which blood sugar levels are higher than normal, but are not high enough to be classified as diabetes; a risk factor for type 2 diabetes."

So that would mean if someone has high blood sugar levels they gain weight? Is this why GTF chromium helps with weight loss, or am I mixing things up here?