Glucose tolerance in jejunoileal bypass for morbid obesity: a fifteen month follow-up.

Twelve patients with body weight varying from 106 to 163 Kg, underwent jejunoileal bypass operations; their oral glucose tolerance tests (oGTT) were evaluated before the operation and one, five, and fifteen months afterwards. The lowering of the glycemic curve and the decrease of the insulinemia values during oGTT have been studied in relation to intestinal absorption deficit and weight loss. It is concluded that weight loss was the main factor determining the improvement of glucose metabolism.