Insulin is produced by the pancreas. Its primary function is to regulate blood sugar levels, however, it is also the hormone that facilitates the transport of fat (triglycerides) into the fat cells. Even worse, it "locks" the fat in the fat cell, preventing it from being used as a source of energy. Now, because the blood sugar has dropped (and we can’t access the fat as a fuel source) it creates "sugar cravings' and the vicious cycle begins again. In other words, an overabundance of insulin causes weight gain.
Therefore, the Ideal Protein Weight Loss Method limits carbohydrates (including sugar), forcing the body into burning fat stores for energy. As daily carbohydrate intake is limited and your body’s need for insulin is sharply reduced, your pancreas (the body’s producer of insulin) is given an opportunity to rest.