With this minimally invasive weight loss surgery, your stomach will be reduced to about 20% to 30% of its normal volume, to restrict food intake. Normally, this surgery is done laparoscopically by a laparoscopic surgeon specialist. This stomach reduction surgery follows the major curve of the stomach and the part that remains resembles a sleeve (approximately shape of a banana) in appearance. Thus the name gastric sleeve or sleeve gastrectomy. This surgical intervention is not as complicated as gastric bypass because the intestines are not involved. You also will have greater tolerance for food.