"Once we understand that insulin is the key player in the development of obesity, we can begin to treat it. Insulin causes obesity, so the key to the treatment of obesity is to lower insulin. Obesity is not a caloric imbalance, it is a hormonal imbalance. Obesity is a disease of too-much-insulin. Therefore, the treatment is to lower insulin. This, of course, is easier said than done.
It is not simply a matter of lowering calories, or lowering carbohydrates, or lowering sugar or lowering processed foods or or increasing fibre or increasing fruits and vegetables. No, it is a matter of doing all of these things that decrease insulin levels." - Dr. Jason Fung, M.D.