- Bleeding, infection, anastomotic leak.
- Deep-vein thrombosis (DVT) / pulmonary embolism (PE).
- Internal hernia or bowel obstruction, strictures.
Functional effects
- Dumping symptoms after high-sugar meals.
- Marginal ulcers—risk increased by smoking and NSAIDs.
- Nutrient deficiencies without long-term supplements and blood tests.
Need reflux control or diabetes improvement? Bypass may be preferred over sleeve—see Sleeve vs Bypass .
How we reduce risk
- Pre-operative assessment and optimisation.
- Experienced laparoscopic technique and careful checks.
- Early mobilisation, DVT prevention and structured follow-up.
Have questions about risk?
Book a consultation
It is uncommon; meticulous technique and monitoring help reduce risk. Your individual risk is discussed in clinic.
Regular use is discouraged due to ulcer risk; your team will suggest alternatives.
Yes—long-term supplementation and scheduled blood tests are advised.