The present study found that, younger patients, with a shorter duration of diabetes, and lower preoperative FBS and Hba1c, with higher preoperative BMI, that were less likely to, took insulin therapy and were less likely to have had a family history of obesity were more likely to have achieved T2DM remission 1-year and 3 years after bariatric surgery. Here, INS is linked to obesity due to melanocortin 4 receptor deficiency.