We will include the offspring of 100 women with GDM and of 100 women without GDM. They will be recruited at 24-32 wks of gestation and will be followed-up with their offspring until birth. Primary outcomes will be measured shortly (2-7 days) after birth. Secondary outcomes will be measured during the foetal period (30-34 wks of gestation), at birth, and shortly (2-4 days) after birth. A long-term follow-up of these children is planned.