Study population
obesity, Obesity, psychiatric, Metabolic Disorders, weight loss, drug dependency
OBESITY, OBESITY, METABOLIC DISORDERS
Study participants are recruited in the bariatric expertise center for obesity of the Maasstad Hospital, Rotterdam, The Netherlands. Patients enrolled in this study will undergo a laparoscopic Roux-en-Y Gastric Bypass (LRYGB) at The Netherlands. Annually, 700 LRYGB procedures are performed in this center.Patients are referred to the expertise center by either the general practitioner or a medical specialist. After referral, patients undergo a screening procedure to assess whether they are eligible for bariatric surgery according to the criteria of the International Federation for the Surgery of Obesity and Metabolic Disorders (IFSO).The IFSO criteria are:Age 18–65 yearsBMI ≥ 40 kg/m2 by itself or BMI ≥ 35 kg/mReasonable attempts at other weight loss techniquesObesity-related health problemsNo psychiatric or drug dependency problemsA capacity to understand the risks and commitment associated with the surgeryPregnancy was not anticipated in the first 2 years following surgeryIf necessary, psychological or dietary assessment and treatment will be performed before patients are accepted for surgery. If patients are eligible for bariatric surgery, informed consent will be given and patients will be scheduled for a LRYGB.