What each procedure does
- Gastric bypass: creates a small gastric pouch and reroutes the small intestine using stapled connections.
- MagDI™: uses a pair of magnets to form a controlled connection between two segments of the small intestine over days, without staples or resection.
Evidence base
- Bypass: Decades of long-term data (STAMPEDE, Mingrone, SOS) on A1c improvement, weight loss, and mortality benefit.
- MagDI™: Emerging evidence base from device studies and clinical series. Long-term outcomes are still being collected. Regulatory status varies by market.
Reversibility and revision
- Bypass: Anatomical changes are permanent; reversal is possible but complex.
- MagDI™: Positioned by proponents as less anatomically disruptive, preserving future surgical options. Individual candidacy is physician-determined.
Recovery
- Bypass: Typically 2–3 nights in-hospital, several weeks of graduated diet.
- MagDI™: Typically shorter in-hospital stay, similar dietary progression.
Which is right for you
This is a physician decision based on BMI, diabetes severity, prior surgery, anatomy, and patient preference. Neither procedure is universally better — they are different tools with different trade-offs.
Ready for an individualized evaluation?
A physician evaluation is the only way to determine candidacy. Outcomes vary; no result is guaranteed.