Treatment of obesity entails weight loss and weight loss maintenance. The co-morbid conditions are resolved or ameliorated with the weight loss and maintenance. Currently, non-surgical treatments are usually effective in inducing weight loss but rarely weight loss maintenance. Weight regain and return of co-morbid conditions are the norm.
Surgery, bariatric surgery, offers the only modality that provides long term weight loss and weight loss maintenance. Surgery is a tool and as such it is very limited at best. Surgical weight loss is based on the principles of decreased caloric intake and/or malabsorption of calories in the gastro-intestinal tract.