It has been considered that gestational diabetes (GD) is onset along a pregnancy and resolves after delivery. It is also believed that GD is a risk factor for the development of diabetes; however it remains controversial the time of pregnancy for looking for and the diagnostic test and protocol to apply. Mother’s age and obesity are closely associated with the presence of glucose intolerance; likewise there are an unsatisfactory number of women who return for evaluation after delivery. The purpose of the paper is to discuss this controversial topic and set out a point of view.