GDM complicates 2-5% of pregnancies in Caucasian women and is characterized by glucose intolerance with the onset or first diagnosis during pregnancy. GDM can have serious consequences for both the child as well as the mother. Risks to the child include fetal macrosomia as well as long-term health consequences like obesity, hypertension, dyslipidemia, glucose intolerance and type 2 diabetes (T2D). Maternal risks include an increased probability of caesarean delivery accompanied by an increased risk of maternal morbidity.