GLP-1 and adiponectin: effect of weight loss after dietary restriction and gastric bypass in morbidly obese patients with normal and abnormal glucose metabolism.

Background: It has been proposed that there is improvement in glucose and insulin metabolism after weight loss in patients who underwent diet restriction and bariatric surgery.

Methods: Eleven normal glucose tolerant (NGT) morbidly obese patients [body mass index (BMI), 46.1+/-2.