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Bariatric Surgery Risks

All surgical procedures carry risks. Your bariatric surgeon will explain all potential risks and complications in detail and answer any questions.

Some risks of bariatric surgical procedures include:

  • Acid reflux
  • Anesthesia-related risks
  • Chronic nausea and vomiting
  • Dilation of esophagus
  • Inability to eat certain foods
  • Infection
  • Obstruction of stomach
  • Weight gain or failure to lose weight

Overview of Bariatric Surgery Risks by Procedure

Risks vary by procedure. The following list is not all-inclusive. Your bariatric surgeon will make sure you understand the risks and complications of your specific procedure.

Risks Procedures
  Gastric Bypass Laparoscopic Adjustable 
Gastric Band


Band slippage, erosion, deflation   X  
Blood clots     X
Breakage X X  
Dumping syndrome X    
Gallstones (risk increases with rapid or
substantial weight loss)
Hernia X X  
Internal bleeding or profuse bleeding of the
surgical wound
Leakage X   X
Perforation of stomach or intestines X    
Port malposition   X  
Pouch/anastomotic obstruction or bowel
Protein or calorie malnutrition X    
Pulmonary and/or cardiac problems X    
Skin separation   X  
Spleen or other organ injury X    
Stomach or intestine ulceration X    
Vitamin or iron deficiency X    

Reducing Your Bariatric Surgery Risks

You can help lower some of the risks by:

Our Presurgical Lifestyle Program can help you prepare for bariatric surgery.


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