Anorexia nervosa is a frequent condition of malnutrition in industrialized countries. The most frequent causes of death in patients with anorexia nervosa are suicide and sudden death generally in relationship with cardiovascular abnormalities. We report a case of a 42-year-old woman with anorexia nervosa who was admitted to our hospital because of severe weight loss. Her electrocardiogram showed a severe sinus bradycardia of 27 b/min.