Disparate treatments, placebos, and treatments as usual have similar efficacy for anorexia nervosa. A parsimonious dissection of the this issue with Occam’s razor will necessarily challenge the assumptions on which the diagnosis of anorexia nervosa is based. One such assumption is the role of body-image disturbance, which became a key diagnostic symptom of anorexia nervosa in the literature almost five decades ago, long before any empirical evidence was gathered about this symptom.