Obesity management requires a multidisciplinary approach, as there are many factors that contribute to the development of obesity as well as the preservation of excess weight once it has been gained. Diet, exercise and behavior modification are key components of treatment. In addition to lifestyle changes, weight gain secondary to medications is an important modifiable risk factor. Even after appropriate lifestyle modification, and medication adjustments (where possible) to avoid agents that can contribute to weight gain, many patients are still unable to achieve clinically meaningful weight loss.