Diabetes represents a heterogeneous group of disturbances, which can have a different aetiology, but have in common glucidic, lipidic and proteinic metabolic disturbances. Insulin-dependent diabetes appears in genetically susceptible persons, as an autoimmune disease activated by environment factors. Epidemiological studies performed in different countries, notice the increasing of diabetes cases in the last decades. Therefore the informatic system EtioDiab (from Etiopathological diabetes) has been developed. The purpose of this system is to assist the medical research regarding the environment factors involved in the etiopathogenesis of insulin-dependent diabetes. The system offers the possibility of calculation of many statistic indicators, of graphic representation of the recorded data, of verification of the statistical hypotheses.