Mixed
Laparoscopic One-Anastomosis Gastric Bypass (OAGB) is a safe and effective surgical intervention for morbid obesity that achieves durable excess weight loss (mean 70-88% at 6-12 years) and remission of comorbidities with lower operative time and complexity compared to Roux-en-Y gastric bypass.
This is a surgical intervention, not a lifestyle protocol. For a patient with a BMI >40, OAGB offers a permanent anatomical change that restricts stomach size and bypasses a portion of the small intestine. The procedure requires strict adherence to a preoperative liquid diet and lifelong daily vitamin/mineral supplementation to prevent deficiencies. The primary benefit is significant, durable weight loss and resolution of obesity-related comorbidities like diabetes and hypertension, with a safety profile comparable to or better than more complex bypass surgeries.
Laparoscopic OAGB is safe and effective. It reduces difficulty, operating time, and early and late complications of Roux-en-Y gastric bypass. Long-term weight loss, resolution of comorbidities, and degree of satisfaction are similar to results obtained with more aggressive and complex techniques.
Why this rating
Large cohort (n=1200) with long-term follow-up (6-12 years), but it is a retrospective observational study, not an RCT.
Source
Laparoscopic One-Anastomosis Gastric Bypass: Technique, Results, and Long-Term Follow-Up in 1200 Patients
Miguel Ángel Martín Carbajo et al. · Obesity Surgery · 2016
DOI 10.1007/s11695-016-2428-1
Related findings · Mixed
- Bariatric surgery (VSG and RYGB) is the most effective and sustainable treatment for obesity, producing marked and sustained weight loss that non-surgical interventions cannot match.Strong
- Severely protein-deficient diets (2–3% energy) induce lean body mass loss and metabolic imbalance, whereas adequate protein intake (0.66 g/kg/d minimum) is a prerequisite for maintaining muscle, bone, and physiological function.Strong
- For patients with Class III obesity (BMI >39.9 kg/m2), metabolic bariatric surgery (MBS) is significantly more effective than any currently approved medication, with BilioPancreatic Diversion (BPD) showing the highest estimated weight loss.Strong
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