New Frontiers on Bariatric Surgical Procedures: Classical Bypass for Type-2 Diabetic Patients With Obesity Grade I

Inclusion Criteria: * Obesity grade I (BMI 30-34,9) * Weight variance less than 5% in the last 3 months. * Previous diagnosis of diabetes type 2. * Insulin requirement, alone or along with oral agents * Capacity to understand the procedures of the study. * To agree voluntarily to participate of the study, signing an informed consent. Exclusion Criteria: * Positive Anti-GAD antibodies * Laboratorial signal of probable failure of insulin production, i. e., seric peptide C lesser than 1 ng/mL. * History of hepatic disease like cirrhosis or chronic active hepatitis. * Kidney dysfunction (creatinine \> 1,4 mg/dl in women and \> 1,5 mg/dl in men). * Hepatic dysfunction: aspartate aminotransferase or alanine aminotransferase 3x above upper normal limit. * Recent history of neoplasia (\< 5 years). * Use of oral or injectable corticosteroids for more than consecutive 14 days in the last three months.