Research
Mixed
Roux-en-Y gastric bypass (RYGB) is the most effective bariatric procedure for producing safe short-term and long-term weight loss in severely obese patients.
For severe obesity, Roux-en-Y gastric bypass is considered the gold standard surgery. It typically results in losing 50-60% of your excess body weight and significantly improves or resolves conditions like Type II diabetes in up to 90% of patients. It requires lifelong vitamin supplementation and dietary changes to manage dumping syndrome.
StrongSupportsHIGH confidence
It is the most effective bariatric procedure to produce safe short-term and long-term weight loss in severely obese patients (13).
Why this rating
Cited as the gold standard with reference 13, and supported by outcome comparisons.
Source
Anesthetic Considerations for Bariatric Surgery
Babatunde Ogunnaike et al. · Anesthesia & Analgesia · 2002
DOI 10.1097/00000539-200212000-00061
narrative_reviewCited 293×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
More from this paper
- Modest weight loss of 5% to 10% of initial body weight significantly improves glucose intolerance, Type II diabetes, hypertension, and dyslipidemia.Good
- Sibutramine and Orlistat are effective pharmacological interventions for weight loss, achieving approximately 5% to 10% weight reduction maintained for up to 2 years.Good
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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