In Russia, according to Rosstat, about 2.5% of adolescents suffer from anorexia, in Moscow, according to 2015 data, at least 5% of young women suffered from anorexia, but most experts believe the true figures are much higher, since only advanced cases are recorded. The relevance of the problem of anorexia nervosa is associated with the potential threat to the lives of patients, eating disorders, concomitant mental diseases and, in general, the deterioration of the mental status of the patient. Despite the seeming simplicity of diagnosis, patients with advanced stages that require long-term therapy are more likely to turn to the doctor. Treatment of anorexia requires a comprehensive approach, including psychopharmacotherapy, psychological influence, diet therapy, therapy of somatic pathology and concomitant complications. It is important that all these aspects of treatment are carried out at the same time. The key to success is the constant monitoring of therapy by a psychiatrist. As a result of the patient's malnutrition, there is a deterioration in the general somatic state of health, as a result of which specifically in girls there are menstrual disorders, complications associated with conception and gestation, and a difficult pregnancy. In this regard, it is especially important to consider this disease from the point of view of psychiatry, obstetrics and gynecology.