Weight Loss Surgery Information
Surgical procedures promote weight loss
both by restricting food intake and causing malabsorption. Food intake
may be reduced by the placement of a band (gastric banding), which allows
only a small amount of food to enter the stomach or by the placement of
a band plus staples to create a small pouch (vertical banded gastroplasty).
Gastric bypass operations, Roux-en-Y gastric bypass, and the extensive
gastric bypass (biliopancreatic diversion, with duodenal switch), create
a small pouch by stapling or removal of portions of the stomach, and also
bypass the duodenum and other segments of the small intestines thus producing
some extent of malabsorption. These procedures have an operative risk,
1 percent to 2.5 percent death rate, but require lifelong medical follow-up
and monitoring to avoid and manage possible complications. Although bariatric
surgery has made major advancements in the last 30 years, the effect on
the human body of the weight loss produced requires investigation.