Eating Disorders

Anorexia and bulimia are diseases known since ancient times, but in recent years their frequency has been continuously increasing in most industrialized countries. The etiology of these disorders can be traced back to the interaction between genetic predisposition, childhood experiences, and cultural pressures. As regards the course, a certain tendency to chronicity can be observed, and in extreme cases, they can cause death. According to the diagnostic classification of the DSM-5, eating disorders include anorexia nervosa, bulimia nervosa, binge eating disorder (which, compared to DSM-IV, becomes a diagnostic category in its own right), and other specified feeding and eating disorders (OSFED). Both anorexia and bulimia cause potentially serious medical complications. To maximize the chances of good outcomes a multidisciplinary intervention is necessary with staff including professionally heterogeneous figures: a psychiatrist, a psychologist, and a nutritionist. Therapeutic success for these patients is limited. Eating disorders require, among psychiatric disorders, the greatest possible collaboration between different professional figures with different specializations

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Tryptophan depletion in obsessive-compulsive patients

Twelve patients with obsessive-compulsive disorder were studied after the administration of a mixture of amino acids devoid of tryptophan (TRP) or a mixture containing all the essential amino acids, in a double-blind, crossover design. The TRP-free mixture caused a marked depletion of plasma TRP. After TRP decrease, mean ratings of obsessions and compulsions, measured by Visual Analogue Scales (VAS) ratings, did not worsen. In contrast with other reports in literature, TRP depletion also failed to alter mood in our subjects