Diabetes ist the most common metabolic and endocrine disorder of the present day, with metabolisam and endocrine disorder of the present day, with metabolism disorders, predominantly carbohydrates, followed by fat and protein. The cause of increased number of patiens is obesity, improper diet and lack of physical activity. Today, people are relatively familiar with diabetes, but we should all learn more about diabetes due to the fact that more and more people are suffering from these two main types of type 1 and type 2 diabetes that have reached epidemic proportions. Contemporary approaches include prevention, the most important link in education and treatment of the disease, and it is therefore important to work in all age groups to make the outcome as good as possible. Diabetes is divided into several types, type 1 insulin-dependet diabetes, which is the only way to treat insulin injections or the use of an insulin pump, most commonly occurs in younger people and cildren, while type 2 diabetes occurs in older people, treatment is successfuly with oral drugs, proper nutrition and physical activity. Gestational diabetes ocuring exclusively in pregnancy and maturity onset diabetes of the young (MODY) are highly associated with genetic predispositions to the development of this type of diabetes. The importance of disease prevention is extremely important in term of lifestyle changes. Healthy nutrition is an essential factor in controlling diabetes, as well as incorporating physical activity. The education through whic people suffering from diabetes pass through is just about improving health and controlling the course of diabetes to avoid complications. The patrons'nurse offers the patients the assurance and quallity of disease control in terms of education and psychological support.