Interestingly, he for well understands that sugars make muscles by glucagon, which is why GIs do a Pepsi bottle and have no musclepain. But without gaining fat being no meds devision athletes.
Actually, Diabetes is a lifestyle disease caused by illicit substance abuse. No 150kg plus human gets that fat only on food and lazyness. They just don't take the hunger blockers Bodybuilders do.
The body will create huge fat reservoirs to wash out the drugs dosed so high that the toilet strategy can't handle it as a side effect of a strongly changed taste and the addict also shooting for the stuffing high of an overfilled and extremely stretched stomach giving quite some "full" feedback to the brain which usually makes the human stop eating.
But than, why scratch when it's itchy...