Psilocybin may help with anorexia nervosa.

Anorexia nervosa is a severe psychiatric disorder characterized by impaired perception of one's own body, often resulting in death, and there is no approved medical therapy for it. The patients were given a single dose of 25 milligrams of synthetic psilocybin, followed immediately by a psychotherapy session. After that, some women showed a significant decrease in their concerns about their own weight. The effect persisted even three months after the treatment received.