Gestational diabetes mellitus (GDM) is the most common internal complication in pregnancy and similarly as the frequency of Type 2 diabetes rises in general population so does the frequency of GDM. The causes include unhealthy life style, growing incidence of over weight and obesity as well as older age of pregnant women.
Older data reported the frequency of GDM in 3-4% of all pregnancies in the Czech Republic, whereas nowadays its frequency with using the same diagnostic criteria is more than two times higher. If we include the measurement of glycemia in 1 hour of oGTT, the frequency of GDM reaches more than 20%. accept the new recommendation of the International Association for Diabetes in Pregnancy Study Groups (IADPSG), it is expected that the frequency of GDM will be even higher.