Kent,

I had always believed that insulin (and through extension, a high carbohydrate diet) inhibits metabolic (energy transforming) activity, which is why we low carbers can usually eat more and still lose as much as a HC dieter? Insulin directly suppresses metabolism; the higher your insulin, the less calories your body will burn, and therefore the easier it is for you to gain weight. Some very insulin resistant (high levels of insulin) people are so bad off they will gain on even starvation levels of a very high carb diet.

Perhaps what you mean is that insulin/sugar damages the body and metabolism via some other mechanism more readily than fat or protein? Certainly your claim that insulin and sugar "rev up" the metabolism as you claim can't be true. If that were true, HCers could eat more than LCers and that is just not the case.