Weight Loss Surgery

Sleeve Gastrectomy

Sleeve Gastrectomy

This is a restrictive procedure. The stomach is reduced in size from a sac shape to a tube that holds around 150ml. It involves removal of over ¾ of the stomach, which is divided with a special stapling device. It used to be the first stage of the BPD bypass procedure but has been performed as a stand alone procedure for over 5 years. The operation significantly reduces hunger by reducing levels of the hormone “Ghrelin” which is predominantly produced in the upper stomach and is removed during this procedure.


  • Keyhole surgery, usually takes just over 1 hour and requires 3-4 days in hospital
  • No adjustments required
  • No foreign material to get infected or leak
  • No fixed obstruction for food to get stuck
  • Normal dietary intake by the majority of patients
  • No malabsorption
  • Significantly safer than Bypass surgery
  • More effective and better tolerated than Gastric Banding
  • Reliable – provided you follow a sensible diet and exercise regularly then good results are expected
  • Low risk of requiring further surgery


  • Not reversible (however most people considering weight loss surgery are after a permanent solution)
  • Risk of leakage from the staple line (<1%) in the first 2 weeks is a major potential complication, which may require further surgery and intensive care


  • 60-70% average excess weight loss (EWL) at 1 year

Current Status

  • Sleeve gastrectomy is the main recommended and most popular procedure for weight loss at Upper GI West
  • Suitable as both a primary or revisional procedure in most patients
  • Upper GI West has performed over 450 procedures in the last 4 years

Read next page about Gastric Bypass Surgery

Return to our weight loss main page