What are the Risks?

All surgeries have risks. Short-term risks include:

  • Bleeding/blood loss
  • Blood clots
  • Infection
  • Leakage (when a perforation of the stomach or a leak from anywhere the bowel is stitched together has occurred)
  • Difficulty in consuming liquids immediately after surgery, due to swelling around the stomach and small bowel
  • Death


Long-term risks include:

  • Nutritional deficiencies
  • The brittle bone disease osteoporosis, due to malabsorption of calcium and vitamin D, which are needed to maintain bone strength
  • Night blindness due to malabsorption of Vitamin A
  • Malabsorption of protein, leading to malnutrition (which could lead to a second operation)
  • Carbs can be well absorbed, resulting in inadequate weight loss
  • Chronic diarrhea
  • Foul-smelling stools and gas