Treatment for Obesity

From Nature Clinical Practice Gastroenterology & Hepatology
Dietary Treatment for Obesity
by Peter M Clifton

Summary
In patients with obesity, low-fat diets seem to result in a weight loss of 3–4 kg at 3 years, but long-term data are limited.
Calorie-controlled diets seem to outperform low-fat diets with reported weight losses of 6–7 kg at 4 years, but, again, data are very limited; an initial very-low-calorie diet approach does not lead to greater weight loss than low-fat diets in the long term.
Use of meal replacements can lead to an 8 kg weight loss at 4 years, but this finding has been reported only in one, uncontrolled study.
High-protein, low-carbohydrate (or very-low-carbohydrate) diets have also been evaluated and seem to be superior to high-carbohydrate diets at least for up to 2 years.
Very-low-carbohydrate diets can lead to elevations in LDL cholesterol levels in some individuals.
Cognitive behavioral therapy added to diet therapy can facilitate approximately 5 kg additional weight loss, and exercise can facilitate an additional 1–1.5 kg weight loss.
Drug treatment, particularly with sibutramine and rimonabant, can increase weight loss with a mildly hypocaloric diet by an additional 3–5 kg, but weight-loss drugs are costly and have adverse effects.
If dietary and medical therapies fail, gastric banding can lead to a weight loss of ~14% at 10 years, with greater losses of up to 25% with gastric bypass and gastroplasty.
Bariatric surgery can also lead to a reduction in mortality and comorbidities but adverse effects can occur including nutritional deficiencies and gastrointestinal symptoms.

http://www.medscape.com/viewarticle/585033?src=sr