Table 1 The diagnostic criteria of anorexia nervosa put forth by The Survey Committee for Eating Disorders of Japanese Ministry of Health, Labour and Welfare

1

Weight loss of more than 20 % of normal weight, lasting longer than 3 months.

2

Abnormal eating behavior involving food restriction, bulimic episodes, and eating by stealth.

3

Disturbances in the way in which one’s body weight or shape is experienced and intense fear of gaining weight, even though underweight.

4

Onset younger than 30 years.

5

In females, amenorrhea, as well as other clinical symptoms including lanugo, bradycardia, constipation, hypotension, hypothermia or edema.

6

Negation of illness including other psychiatric disorders that account for anorexia and weight loss.