Together with evidence of normalization of insulin secretion after bariatric surgery (84), insights into the behavior of the liver and pancreas during hypocaloric dieting lead to a hypothesis of the etiology and pathogenesis of type 2 diabetes (Fig. 6): The accumulation of fat in liver and secondarily in the pancreas will lead to self-reinforcing cycles that interact to bring about type 2 diabetes. Fatty liver leads to impaired fasting glucose metabolism and increases export of VLDL triacylglycerol (85), which increases fat delivery to all tissues, including the islets. The liver and pancreas cycles drive onward after diagnosis with steadily decreasing β-cell function. However, of note, observations of the reversal of type 2 diabetes confirm that if the primary influence of positive calorie balance is removed, then the processes are reversible (21).
Diabetes is an illness related to elevated blood sugar levels. When you stop releasing and responding to normal amounts of insulin after eating foods with carbohydrates, sugar and fats, you have diabetes. Insulin, a hormone that’s broken down and transported to cells to be used as energy, is released by the pancreas to help with the storage of sugar and fats. But people with diabetes don’t respond to insulin properly, which causes high blood sugar levels and diabetes symptoms.
If the patient were to gain weight back or scale back on their physical activity program, high blood glucose would return. If they were to overeat at a meal, their blood glucose probably would continue to go higher than someone without diabetes. Also, the decreased insulin production and/or increased insulin resistance that led to the initial diabetes diagnosis will gradually intensify over the years and during periods of stress. In time, the patient who could maintain normal blood glucose with diet and exercise alone may discover that he or she needs to add oral diabetes medications — or perhaps even insulin injections — to keep blood glucose in a healthy range.
Some people with type 2 diabetes can manage their disease by making healthy food choices and being more physically active. Many people with type 2 diabetes need diabetes medicines as well. These medicines may include diabetes pills or medicines you inject under your skin, such as insulin. In time, you may need more than one diabetes medicine to control your blood glucose. Even if you do not take insulin, you may need it at special times, such as during pregnancy or if you are in the hospital.
The above two rules are the only dietary rules you need to maintain ideal weight for the rest of your life, assuming you apply common sense and avoid extremes. The diet works by building in regular periods of insulin relief, keeping your body from becoming resistant to insulin. Following these two rules, you will maintain your weight and health by never entering the vicious cycle of increasing insulin resistance.