The aim of this study is to compare a weight reduction programme with and without a maintenance programme in patients with severe obesity.
Inclusion Criteria: * BMI 35 kg/m2 or more * Age 18-65 years Exclusion Criteria: * Type 1 diabetes * Major alcohol problem * Acute psychic disease, eating behavior, pregnancy, severe disease (cancer, unstable coronary disease, severe liver or kidney disease), or the patient has been in this treatment within the past 5 years