ScienceDaily — Every year more than 100,000 U.S. patients undergo gastric bypass surgery for the treatment of obesity. Experience now shows approximately 20 percent of these patients will regain weight within a few years after the surgery, due to the stretching of the stomach, and will be at renewed risk for diseases such as hypertension, diabetes, and cardiovascular disease. The Center for the Treatment of Obesity at UC San Diego Medical Center now offers a new incision-free procedure to reverse weight gain after gastric bypass surgery.