Components of metabolic syndrome and eating disorders have common traits in combination of somatic and psychiatric disorders. Obese patients and diabetics often do not cooperate enough in therapy. The weight increase in adolescents can be the first effect of diabetes genes. Weight loss in adolescents can therefore have rational reasons. It is necessary to educate patients with eating disorders in diets including diabetes prevention strategies with individual approach. The incidence of eating disorders has no implication for reduction of preventive strategies for diabetes and obesity oriented to whole populations.

        Key words: metabolic syndrome, obesity, diabetes, somatic changes.