The concept of reversal or remission of type 2 diabetes is increasingly gaining strength within the scientific community. It was first noted in the 1980s, due to the outcomes of bariatric surgery, which found that obese individuals with type 2 diabetes frequently achieved normalized blood glucose levels shortly following their procedure. The major determinant of achieving normal blood glucose regulation was correlated with the degree of achieved weight loss. Researchers also noted that a greater degree of weight loss was required for longer duration type 2 diabetes, than was for shorter duration diabetes. This led researchers to consider how different diets may impact type 2 diabetes. What became clear in the few larger scale studies is the correlation between weight-loss and blood sugar normalization.