Conventional wisdom long held that once someone developed diabetes, he/she would have it forever. But with the advent of gastric bypass surgery, it became clear that extreme weight loss could reverse some cases of type 2 diabetes.
In 2009, the American Diabetes Association endorsed a new dietary approach to treating diabetes - one that focuses on low-fat, vegan (pure vegetarian) eating. Many people have found that this approach leads to significant weight loss and sometimes to the disappearance of signs of diabetes.
Of course, going back to poor eating habits is likely to cause diabetes to come roaring back.