Metabolic surgery is a set of gastrointestinal operations, such as gastric bypass, bilio-pancreatic diversion, duodenojejunal bypass and ileal interposition, done with the intent to treat diabetes mellitus (DM), especially type 2 DM (also called diabetes surgery) and metabolic dysfunctions (which include obesity).
Metabolic surgery, which is usually performed on patients with uncontrolled DM and morbid obesity, excluding cosmetic concerns, is distinct from bariatric surgery.
