Weight loss surgery is meant to be a lifetime opportunity for weight management. Not all surgeries are reversible. Although a LapBandĀ® can be physically removed, it leaves a scar and alters the surrounding tissue of the stomach. Other operations, like a Roux-en-Y gastric bypass, really cannot be easily reversed, that is, to restore the anatomy to what it was before surgery. The sleeve gastrectomy cannot be reversed. When you reverse any weight loss surgery, you will likely regain your weight. The surgery is a tool to help you manage your disease.