Hyperinsulinemia causes obesity, evidenced by weight gain when insulin is prescribed or increased, and weight loss when insulin is lowered in type 1 diabetics.

“so there is a great experiment a few years ago where they took people who were type 2 diabetic this is in the 90s and they gave them loved insulin so from time 0 to 6 months they went from 0 units of insulin to like a hundred units of insulin that blood Sugar's were great and what happened well they gained like 20 pounds and if you look at the number of calories that they were eating per day it actually dropped by about - 300 calories per day so what you see is that the only difference because this was a randomized sort of trial the only difference was the hyperinsulinemia that's what we change when we change experimentally the amount of insulin people were getting because we're giving it to them they gained weight”