对于重度肥胖患者 [定义为体重指数（BMI）≥35 kg/m2]而言，代谢减重手术是有效的干预措施之一，如 Roux-en-Y胃旁路术、袖状胃切除术和可调节胃束带术，但何种术式最优尚无确切答案。事实上，当前对比不同术式疗效的临床证据仍比较有限，因为在相关临床试验开展的过程中，患者对不同类型减重手术的偏好、手术对生活质量的影响等因素会妨碍正常的随机分组，从而造成研究结果可能存在偏倚。

A new study published in the journal of The Lancet Diabetology and Endocrinology revealed that with 68% of individuals ...

Following surgery, there were 1,651 adverse events (6.0, 4.6, and 5.7 per year after Roux-en-Y gastric bypass, adjustable gastric banding, and sleeve gastrectomy, respectively).