This fascinating, well-researched, and amply documented monograph reveals multiple fallacies in current thinking about the epidemiology and etiology of anorexia nervosa. The author first clarifies the difference between the emergence of a disorder and the discovery of that disorder. She describes the preconditions for the emergence of the current concept of anorexia nervosa (considered to be starvation due to psychological reasons). The main precondition included development of the concept of the self, which had historical roots in the late 1700s and early 1800s. The conditions required for the discovery of the disorder are then described, and cogent reasons are provided for thinking that a disorder may exist long before the process of discovery is complete. In the case of anorexia nervosa, the author contends that the process of discovery probably began in 1860 with Louis-Victor Marcé, who described a specific kind of stomach disorder that occurred predominantly in adolescent girls. This condition was elucidated by Laségue and Gull a decade later and finally clarified as separate from Simmond's disease in the 1940s. The author makes the point that anorexia nervosa did not arise de novo in the 1870s, nor was the condition necessarily very rare by the time it was detected by the medical profession.