Aim: Our aim is to evaluate the short-term (4 month follow-up) outcomes of sleeve gastrectomy in type 2 diabetic patients, comparing them with hypertensive ones and the patients without any known chronic condition, retrospectively Material and methods: This study was conducted with three categories of subjects: 1) DM2 patients with minimum BMI of 40, 2) patients with isolated hypertension (HT) and 3) patients without any known chronic condition. Following parameters were evaluated retrospectively before the operation and 4 months after the operation: fasting blood glucose, glycated haemoglobin (HbA1c), diastolic and systolic blood pressure, weight, body mass index (BMI), lipid profiles and glomerular filtration rate by using Modification of Diet in Renal Disease (MDRD) equation Results: There were significant changes in SBP (systolic blood pressure), DBP (Diastolic blood pressure), weight, BMI, fasting glucose (FG), HbA1c, creatinine, blood urea nitrogen (BUN), LDL, TG, TC (total cholesterol) and HDL. The total weight loss according to mean values before and after the surgery was 19.71 kg. The change in BMI was less in the DM group compared to control and HT groups (p=0.044). Discussion: As a result, the benefits of bariatric surgery are manifest in a short period, i.e. four months, in obese patients. The significant recovery in SBP, HbA1c and lipid parameters indicates that this surgery is likely to have additional benefits for selected cases in the future.