How it works to help you lose weight
A sleeve gastrectomy is a procedure that limits the amount of food you can eat by reducing the size of your stomach. Like other metabolic surgeries, it also helps to establish a lower, healthier body fat set point by changing the signals between the stomach, brain, and liver.

Vertical sleeve gastrectomy can be the first step before other surgical procedures (eg, gastric bypass) or it may be employed as a single procedure for weight loss.

  • The surgeon creates a small stomach “sleeve” using a stapling device. This sleeve will typically hold 50 mL to 150 mL and is about the sizeof a banana. The rest of the stomach is removed.

  • This procedure induces weight loss in part by restricting the amount of food (and therefore calories) that can be eaten without bypassing the intestines and absorbed.

  • Weight loss and improvement in parameters of metabolic syndrome are connected with the resection of the stomach and subsequent neurohormonal changes.

  • If vertical sleeve gastrectomy is used as the first step before gastric bypass, in the second step the surgeon attaches a section of the small intestine directly to the stomach pouch, which allows food to bypass a portion of the small intestine.

The procedure
A thin vertical “sleeve” of stomach is created using a stapling device. This sleeve is about the size of a banana. The excised, unused portion of the stomach is removed.


  • Limits the amount of food that can be eaten at a meal.

  • Allows the body to adjust to its new, healthier set point.

  • Food passes through the digestive tract in the usual order, allowing vitamins and nutrients to be fully absorbed into the body.

  • No postoperative adjustments are required

  • In clinical studies patients lost an average of 66% of their excess weight.

  • Shown to help resolve high blood pressure (49%), obstructive sleep apnea (60%), and to help improve type 2 diabetes (45%) and high cholesterol (77%).


  • Complications due to stomach stapling, including separation of tissue that was stapled or stitched together and leaks from staple lines.

  • Gastric leakage.

  • Ulcers.

  • Dyspepsia.

  • Esophageal dysmotility.

  • Nonreversible since part of the stomach is removed.


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