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weight-loss surgery

Weight-loss (bariatric) surgery helps you lose weight and lowers your risk of medical problems associated with obesity. Bariatric surgery contributes to weight loss in two main ways:

  • Restriction. Surgery is used to physically limit the amount of food the stomach can hold, which limits the number of calories you can eat.
  • Malabsorption. Surgery is used to shorten or bypass part of the small intestine, which reduces the amount of calories and nutrients the body absorbs.

Four common types of weight-loss surgery are:

  • Roux-en-Y gastric bypass
  • Laparoscopic adjustable gastric banding
  • Sleeve gastrectomy
  • Duodenal switch with biliopancreatic diversion


There are 7 types of weight loss surgery (also called “bariatric surgery”) available. Each type has advantages and disadvantages, and this page will help you decide which one is right for you.

Here is a very brief description of how each procedure will help you lose weight:

  1. Gastric Sleeve – you will feel less hungry generally & full sooner while eating
  2. Gastric Bypass – you will feel full sooner while eating & absorb fewer minerals
  3. Duodenal Switch – you feel less hungry generally & full sooner while eating, absorb fewer calories and minerals
  4. LAP-BAND® – you will feel full sooner while eating
  5. Gastric Balloon – you will temporarily feel full sooner while eating (balloon removed after 6 months)
  6. vBloc Therapy – you will feel full between meals & less hungry while eating
  7. AspireAssist – drain a portion of stomach contents after eating and absorb fewer calories