The laparoscopic sleeve gastrectomy is a restrictive procedure in which 85-90 % of the volume of the stomach is removed, but the gastric sleeve and the rest of the GI tract are in continuity. Nothing is bypassed. And the sleeve is not a device, like the lap band, but the new tubular shape of your stomach. In Dr. Suggs experience, the sleeve has similar results to the gastric bypass. It’s even pretty effective in curing or relieving diabetes.