A Restrictive Procedure

The sleeve gastrectomy is an operation in which the left side of the stomach is surgically removed, leaving it roughly the size and shape of a banana.  The nerves to the stomach and the outlet valve remain intact to preserve the functions of the stomach while drastically reducing its volume.

By comparison, when a gastric bypass (Roux-en-Y) procedure is performed, the stomach is divided rather than removed and it can be reconnected (reversed) if necessary.  There is no intestinal bypass with sleeve gastrectomy procedures, 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.
  • No adjustments or fills are needed.
  • The chances of an ulcer occurring are minimized.


  • This procedure involves stomach stapling. 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, remaining 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.


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