Gastric surgery for weight loss is one of the main reasons that people get the surgery. This is a life-threatening condition if morbid obesity has affected your life for more than 5 years. Morbid obesity can lead to several debilitating conditions like Diabetes, terminal cancer, diabetes, and Heart disease. These are diseases that are directly caused by obesity, and gastric bypass surgery can help reduce their chances of occurring. By lessening the likelihood of debilitating diseases, gastric bypass surgery actually has some benefit despite its risk.