Diabetes that occurs for the first time during a pregnancy in women who haven't been previously diagnosed with diabetes is also called gestational diabetes. The diabetic effect caused by pregnancy in a mother's organism associated with decreased insulin sensitivity (insulin resistance) leads to hyperglycemia. Long-term hyperglycemia adversely affects both mother and child. In order to reduce the morbidity of mothers and children, and to act preventively, it's important that in a timely manner, using the antenatal care principles, pregnant women with diabetes get detected. The test method is the OGTT test ( Oral Glucose Tolerance Test)- according to WHO and HAPPO study recommendations. The goal of treating gestational diabetes is to maintain blood glucose levels at an equal level as in pregnant women without GDM. Treatment involves a diet of 1800 kcal per day and individualized level of physical activity. If diet and exercise are not sufficient to achieve normal glucose levels, the doctor will prescribe drugs, which in some cases include oral hypoglicemics, as well as insulin therapy. The unity of the entire health care team and health care itself starting with prevention, timely detection and treatment is the only way to get a positive outcome. The midwives care and their irreplaceable role at all health care levels bring yet another important dimension to the care of those in need.