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Bariatric surgery

Sleeve or bypass? Start with the right questions

The best bariatric procedure depends on your health, goals, eating pattern, and follow-up needs.

Sleeve gastrectomy reduces the size of the stomach. Gastric bypass creates a small stomach pouch and changes the route of food through part of the intestine. Both can support meaningful weight loss, but their benefits, risks, and effects on reflux and nutrition differ.

The choice should follow a full assessment—not a single number on the scale. Long-term follow-up, healthy eating, activity, and prescribed vitamins remain essential after surgery.

Source: NIDDK patient information. This guide is educational and does not replace a personal assessment.
This content is for general education and does not replace a personal medical assessment.