Laparoscopic Roux-en-Y gastric bypass surgery uses a combination of restriction and malabsorption.
During the procedure, Dr. Felix Spiegel creates a smaller stomach pouch and then attaches a section of the small intestine directly to the pouch with laparoscopic sutures (stitches). This technique provides a very secure anastomosis (connection) between the intestine and the new small gastric pouch without using staplers to decrease the chances of anastomotic leak.
Having the smaller stomach pouch causes patients to feel fuller sooner and eat less food. In addition, bypassing a portion of the small intestine will allow you to absorb fewer calories and increase the average weight loss compared to other bariatric procedures which are only restrictive.
Due to malabsorption of some micronutrients patients must supplement their diet with a daily multivitamin and calcium. Some patients must take vitamin B12 and/or iron.
A condition known as dumping syndrome can occur from eating high-fat, high-sugar foods. While it isn't considered a health risk, the results can be very unpleasant and may include vomiting, nausea, weakness, sweating, faintness, and diarrhea. This should not scare a patient who is motivated to achieve their desired weight loss goals. You will quickly learn to pick healthier foods with high nutritional value and limit the amount of high fat and high sugar foods. This will minimize any possible symptoms of dumping syndrome, improve your nutrition, energy, and allow you to achieve maximum desired weight loss.