Four cases of anorexia nervosa with fatal outcome are reported in this study. Only one death was related to severe inanition; in two instances, no satisfactory cause of death was found on autopsy. The fourth patient died from the effects of general calcinosis (Vitamin D poisoning), with cardiac and renal failure. There was nothing in the initial picture which suggested that these patients suffered from a more malignant form of anorexia nervosa than is generally seen by psychiatrists.
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Hilde Bruch (1971) studied this question.