Effects of Laparoscopic Roux-en-Y Gastric Bypass on Chinese Type 2 Diabetes Mellitus Patients with Different Levels of Obesity: Outcomes After 3 Years’ Follow-Up

Background Laparoscopic Roux-en-Y gastric bypass (LRYGB) has been proven to be effective on treating type 2 diabetes mellitus (T2DM) in severely obese patients, but whether LRYGB surgery should be performed in obese class I patients is controversial.