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Procedures

Sleeve gastrectomy vs Roux-en-Y bypass vs mini-bypass — which is best?

Medcasts editorial team

All three are effective; the right operation depends on your specific situation.

• Sleeve gastrectomy (SG): simpler surgery, shorter operation, lower long-term complication rate. Best for: moderate obesity, predominant weight loss goal, no severe reflux. Average excess weight loss: 50–60% at 5 years.

• Roux-en-Y gastric bypass (RYGB): more complex, slightly higher complication rate, but better diabetes remission and reflux control. Best for: severe obesity, type 2 diabetes, severe reflux. Average excess weight loss: 60–70% at 5 years.

• Mini-bypass (one-anastomosis bypass): shorter operation than RYGB, similar weight loss outcomes, but bile reflux risk is real. Best for: experienced programs only.

Get a second opinion if a single operation is recommended without discussing alternatives.

This answer is general information, not medical advice. Your own doctor should confirm what applies to your case.

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