The aim of this study is to assess 5 year long-term outcomes of laparoscopic sleeve gastrectomy emphasizing weight loss and modification of comorbidities such as type 2 diabetes mellitus, hypertension and gastroesophageal reflux disease from a developing country, Turkey. Prospectively-collected patient data will retrospectively reviewed. To measure the efficacy of the procedure, we will calculate the excess weight loss percentage (EWL %). Effective weight loss after LSG will accepted as more than 50%. The changes in the status of the type 2 diabetes mellitus, hypertension, gastroesophageal reflux disease will be observed.

Inclusion Criteria:

• Inclusion criteria were, patients between 18 to 65 years old, initial body mass index (BMI) 40 kg/m2 or BMI of 35 kg/m2 in the presence of additional comorbidity and failure of conservative treatment for 2 years.

Exclusion Criteria:

• None