Evaluation of the Metabolic Surgery Technique for Glycemic Improvement in Type 2 Diabetes

Inclusion Criteria: * adult patient and ≤ 65 years old * T2D patient, with individualized glycemic objectives not achieved, despite medical care, in particular diabetological and nutritional, also including adapted physical activity, well conducted according to current good practice recommendations, for at least twelve months * BMI between 30 and 34.9 kg/m² * patient well informed beforehand about metabolic surgery and the study * multidisciplinary evaluation (including a diabetologist) and decision on medical treatment by CM (date prior to inclusion) * medical assessment of an acceptable surgical risk * patient affiliated to or beneficiary of a social security system * patient having freely signed the written informed consent Exclusion Criteria: * severe cognitive or mental disorders * severe and unstabilized eating behavior disorders * dependence on alcohol and licit and illicit psychoactive substances * illnesses endangering life in the short and medium term * contraindications to general anesthesia * absence of identified prior medical care and foreseeable inability of the patient to participate in lifelong medical monitoring * history of bariatric surgery * pregnant or breastfeeding woman, or having a very long-term pregnancy plan short term (\< 2 years) * adult patient under guardianship or curatorship * patient deprived of liberty or under judicial decision