In women with pre-gestational diabetes, the risk of adverse pregnancy outcomes correlate with the level of glycaemia. 1 In Norway, the prevalence of pregnancies complicated by pre-gestational diabetes has been stable around 0.7% for the last decade. 2 Corresponding numbers are reported in Australia (0.6%) and in the United States (0.9%). 3,4 However, due to increasing obesity, earlier onset of type 2 diabetes (T2D) and higher maternal age, the prevalence of pregestational diabetes is expected to rice globally.