Gestational diabetes is defined by the World Health Organization (WHO) as carbohydrate intolerance resulting in hyperglycemia of variable severity with onset or first recognition during pregnancy. 1 The implementation of systematic screening as suggested by the evidence that emerged from the HAPO study 2 and the conclusion by the International Association of Diabetes and Pregnancy Study Groups (IADPSG), who sponsored the International Workshop Conference on Gestational Diabetes in 2008, indicate that this is a frequent disease. 3