A successful reduction of body weight in patients with morbid obesity (BMI >40 kg/m2) is difficult and in the majority of patients it is impossible with non-interventional treatment modalities. Surgical therapy is an efficient alternative for these patients. Potential surgical intervention, however, should be carefully evaluated during a six month preoperative treatment phase. During this time period indications and contraindications must be evaluated.

        Key words: morbid obesity – conservative therapy – basal metabolic rate – eating behaviour – satiety