Misconception: Most people who have metabolic and bariatric surgery regain their weight.
As many as 50 percent of patients may regain a small amount of weight (approximately 5 percent) two years or more following their surgery. However, longitudinal studies find that most bariatric surgery patients maintain successful weight-loss long-term. ‘Successful’ weight-loss is arbitrarily defined as weight-loss equal to or greater than 50 percent of excess body weight. Often, successful results are determined by the patient, by their perceived improvement in quality of life. In such cases, the total retained weight-loss may be more, or less, than this arbitrary definition. Such massive and sustained weight reduction with surgery is in sharp contrast to the experience most patients have previously had with non-surgical therapies.