By the end of the last century, diabetic nephropathy was present in up to 7% among unselected pregnant women with type 1 diabetes, but in a recent study, it was reported that the prevalence of diabetic nephropathy is now 2.5% and 2.3% in pregnancies complicated by type 1 and type 2 diabetes, respectively. In line with this, the current prevalence of microalbuminuria is now 3.4% and 4.5%, respectively. 1 , 2