Final answer:
The standard not used for diagnosing anorexia nervosa is 'E. lack of appetite.' While anorexia nervosa patients restrict their food intake, they may still experience hunger but choose not to act on it due to a fear of gaining weight.
Step-by-step explanation:
The standard used for diagnosing anorexia nervosa except for the criteria listed would be E. lack of appetite. Although it might seem counterintuitive, anorexia nervosa involves complex psychological issues, and patients may still experience feelings of hunger, but choose to ignore them due to a pathological fear of gaining weight. The primary criteria for diagnosing anorexia nervosa include:
- A. an intense fear of gaining weight or becoming fat, even though underweight,
- B. a refusal to maintain body weight at or above a minimally normal weight for age and height,
- C. amenorrhea, in women who have had their first menstrual period but then stop menstruating,
- D. a disturbance in the way in which body weight or shape is perceived.