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Vertical Sleeve Gastrectomy (VSG)

A Restrictive Procedure

The sleeve gastrectomy is an operation in which the left side of the stomach is surgically removed, leaving the stomach roughly the size and shape of a banana.  The nerves to the stomach and the outlet valve remain intact in order to preserve the functions of the stomach while drastically reducing the volume. By comparison, in a Roux-en-Y gastric bypass, the stomach is divided, not removed and can be reconnected (reversed) if necessary.  There is no intestinal bypass with this procedure, only stomach reduction.


  • Sleeve gastrectomy involves no malabsorption of nutrients therefore avoiding anemia, osteoporosis, protein deficiency and vitamin deficiency.
  • This is the only surgery that substantially removes the "hunger hormone," Ghrelin.
  • It does not need adjustments or fills.
  • As this procedure may be used as the first stage of a two-stage operation, it may be a safer for patients with a body mass index (BMI) more than 60.
  • The chances of an ulcer occurring are minimized.


  • This procedure involves stomach stapling and therefore leaks and other complications related to stapling may occur.
  • Because the stomach is removed, it is not reversible. It can be converted to almost any other weight loss procedure.
  • The smaller portion of the stomach may stretch.
  • Foods that you eat now may cause discomfort, nausea or vomiting after your surgery.
  • Gastric surgery puts you at higher than normal risk of developing gallstones and gallbladder disease.