Eating disorders such as anorexia, bulimia, and binge-eating disorder are particularly widespread among girls during adolescence. Therefore, early recognition and prompt treatment are essential for successful therapy. This practical manual presents a detailed concept of group therapy as a valuable complement to individual therapy for the first time and includes numerous working materials. After a brief theoretical introduction, the conditions for treatment that have proven effective in social psychiatric practice are outlined. The ten therapy modules are designed as an interdisciplinary group therapy and integrate elements from cognitive behavioral therapy, art therapy, body therapy, psychodrama, and family therapy. A practical guide for conducting a supporting parents' seminar rounds out the volume.