SADI-S Procedure
A modern bariatric surgery combining sleeve gastrectomy with bowel bypass for significant, lasting weight loss in severe obesity.
Plain English
Patient-Friendly Explanation
SADI-S stands for Single Anastomosis Duodeno-Ileal Bypass with Sleeve. It is a modern weight loss surgery that combines a sleeve gastrectomy (making the stomach smaller) with a bowel bypass that reduces calorie absorption. This procedure offers significant and lasting weight loss for people with severe obesity.
Medical
Clinical Definition
SADI-S is a single-stage malabsorptive bariatric procedure combining laparoscopic sleeve gastrectomy with a loop duodeno-ileal anastomosis approximately 250–300 cm from the ileocaecal valve. It evolved from the biliopancreatic diversion with duodenal switch, simplifying the procedure while maintaining comparable efficacy in weight loss and metabolic improvement.
Key Insight
Why It Matters
SADI-S achieves excellent long-term weight loss and remission of type 2 diabetes with fewer complications than older malabsorptive procedures. Understanding this option helps patients discuss the full range of bariatric approaches with Dr. Joseph Wang at Accord Medical.
Sources
Reviewed against standard medical references.
Medically reviewed by
Family Physician & Registered Acupuncturist, Accord Medical Clinic. MBBS (NUS), Graduate Diploma in Family Medicine (NUS), Graduate Diploma in Acupuncture (Singapore College of TCM).
Last reviewed: August 2026
This page is general health education, not medical advice. Whether any treatment is appropriate for you is a decision made in consultation after assessment.