Menstrual disorders are among the most frequent somatic complications and symptoms of eating disorders. Since 1972 amenorrhea has been registered among the diagnostic criteria of anorexia nervosa (AN). Although such a criterion is not essential for establishing a case of bulimia nervosa (BN), international research has, on several occasions, described menstruational disorders (in 95% of the cases) and amenorrhea (in 20% of the cases). This study was designed to assess the prevalence of eating disorders connected to menstruational disturbances having no organic causes. Our method was the following: the test was carried out via questionnaires (ANIS, BCDS, BITE, EDI, BDI) completed by patients of endocrine surgery of two gynecological out-patient wards. We have found the following (n = 75) prevalence figures: AN: 4%, BN: 12% while the total prevalence of clinical and subclinical eating disorder syndromes was at 44%. Our findings, are in line with other international findings.