title: Metabolic surgery-principles and current concepts.
abstract: BACKGROUND
  In the almost six decades of bariatric surgery, a variety of surgical approaches to treating morbid obesity have been developed.
  Rather than prior techniques being continually superseded by new ones, a broad choice of surgical solutions based on restrictive, malabsorptive, humoral effects, or combinations thereof, is now available. In fact, in recent years, the advent of surgically modifying human metabolism promises new approaches to ameliorate traditionally medically treated metabolic entities, i.e., diabetes, even in the non-obese. The understanding of the various metabolic effects have led to a paradigm shift from bariatric surgery as a solely weight-reducing procedure to metabolic surgery affecting whole body metabolism.
  
  
  CONCLUSIONS
  The bariatric surgeon now faces the challenge and opportunity of selecting the most suitable technique for each individual case. To assist in such decision-making, this review, Metabolic surgery-principles and current concepts, is presented, tracing the historical development; describing the various surgical techniques; elucidating the mechanisms by which glycemic control can be achieved that involve favorable changes in insulin secretion and insulin sensitivity, gut hormones, adipokines, energy expenditure, appetite, and preference for low glycemic index foods; as well as exploring the fascinating future potential of this new interdisciplinary field.
authors.affiliation: Department of Visceral Surgery, St. Claraspital Basel, CH-4058 Basel, Switzerland.
authors.forename: M
authors.initials: M
authors.lastname: Gass
authors.forename: C
authors.initials: C
authors.lastname: Beglinger
authors.forename: R
authors.initials: R
authors.lastname: Peterli
mesh_terms: D050110:Bariatric Surgery / Q000009:adverse effects / Q000379:methods*; D001786:Blood Glucose / Q000032:analysis; D015992:Body Mass Index; D003924:Diabetes Mellitus, Type 2 / Q000175:diagnosis / Q000453:epidemiology; D005260:Female; D005500:Follow-Up Studies; D005768:Gastrointestinal Hormones / Q000378:metabolism*; D006801:Humans; D007333:Insulin Resistance; D008297:Male; D024821:Metabolic Syndrome / Q000175:diagnosis / Q000453:epidemiology; D009767:Obesity, Morbid / Q000175:diagnosis / Q000453:epidemiology / Q000601:surgery*; D018579:Patient Selection; D011183:Postoperative Complications / Q000453:epidemiology / Q000503:physiopathology; D011300:Preoperative Care / Q000379:methods; D018570:Risk Assessment; D012720:Severity of Illness Index; D016896:Treatment Outcome; D015431:Weight Loss
chemical_list: D001786:Blood Glucose; D005768:Gastrointestinal Hormones