Sleeve Gastrectomy
Sleeve gastrectomy is a laparoscopic bariatric procedure in which about 75–80% of the stomach is removed, leaving a narrow tubular “sleeve”. It works by reducing stomach capacity and lowering hunger-related hormone levels.
Who may be a candidate?
Sleeve gastrectomy may be considered for adults with a BMI ≥ 40, or BMI ≥ 35 with obesity-related conditions such as type 2 diabetes, hypertension, sleep apnea or severe joint disease, when supervised non-surgical weight management has not been successful. Final candidacy is determined only after a full multidisciplinary evaluation.
How the procedure is performed
The operation is performed laparoscopically under general anaesthesia. The greater curvature of the stomach is divided with a stapler along a calibration tube, creating a tubular stomach of approximately 80–120 mL.
Recovery and follow-up
Hospital stay is typically 2–3 nights. A staged nutrition programme (clear liquids → full liquids → puree → soft → solid) is followed during the first 4–6 weeks. Long-term follow-up includes nutrition, vitamin and mineral supplementation and periodic laboratory checks.
Possible risks
As with any major surgery, possible risks include bleeding, staple-line leak, infection, venous thromboembolism, gastro-oesophageal reflux and long-term nutritional deficiencies. All risks are discussed individually before any decision.
Frequently asked questions
Who is a candidate for sleeve gastrectomy?
Sleeve gastrectomy may be considered for patients with a BMI ≥ 40, or BMI ≥ 35 with obesity-related conditions such as type 2 diabetes, hypertension or sleep apnea, when non-surgical weight loss has failed. Final candidacy is determined only after a full medical evaluation.
How does sleeve gastrectomy work?
About 75–80% of the stomach is removed laparoscopically, leaving a narrow tubular 'sleeve'. The procedure both restricts food volume and reduces hunger-related hormones such as ghrelin.
What is the recovery time?
Most patients stay in hospital 2–3 nights and return to light daily activity within 1–2 weeks. Full physical activity and a stable nutrition plan are typically reached at 4–6 weeks under medical supervision.
What are the risks?
As with any major surgery, possible risks include bleeding, staple-line leak, infection, reflux and nutritional deficiencies. Risks and how they are minimised are reviewed individually before any decision.
Last updated: 31.05.2026 · Medical content: Op.Dr.Gökhan ATEŞ