|Restriction||Combined Restriction & Malabsorption||Malabsorption|
Adjustable Gastric Banding is a restrictive procedure.
Restrictive procedures work by creating a small stomach pouch to limit the amount of food one can eat. A smaller stomach pouch fills quickly, which helps individuals feel satisfied with less food.
Roux-en-Y gastric bypass surgery uses a combination of restriction and malabsorption.
Again, a small stomach pouch is created to restrict food intake. In addition, decreased absorption of calories is induced by creation of a "bypass," which allows food to skip parts of the small intestine. In malabsorptive operations such as this, the body cannot absorb as many calories or nutrients.
These procedures work by rerouting the small intestine so that food skips a long portion. Since the small intestine absorbs all calories and nutrients from food, bypassing part of it means that some calories and nutrients are not absorbed.
Surgeons no longer perform strictly malabsorptive procedures; most procedures that use malabsorption also use restriction.
These different methods work to help patients lose excess weight and transform their health by resolving or improving associated medical conditions. While weight-loss surgery has many benefits, it also carries certain risks.
Deciding to accept risk for the purpose of improving one’s health is a big decision that requires face-to-face discussions between patients and physicians. Although the risks of untreated obesity generally are greater than the risks of surgery, patients need to have full information about the possibility of complications before making a final decision to go ahead.
Therefore, every weight-loss surgery candidate will have a minimum of two individual appointments with a surgeon and nurse practitioner to gather the information about risks and benefits for the available procedures, so the best personal choices can be made.