INS and type 2 diabetes mellitus: While seven papers focused on T2D remission after bariatric surgery, another seven studies addressed the specific profile associated with T2D related parameters, namely glycated hemoglobin (HbA1c) levels, insulin secretion and sensitivity, as inferred from insulinogenic index, homeostasis model assessment-insulin resistance (HOMA-IR) [56] and Quantitative Insulin Sensitivity Check Index (QUICKI) [29].