No, a person does not have to be underweight to be diagnosed with anorexia. Though many people with anorexia are underweight, anorexia symptoms lie mostly in disordered eating, body image issues, and other mental health conditions.
If someone who is a normal weight for their age and height is severely restricting their caloric intake, has an intense fear of gaining weight, or has an unrealistic interpretation of their body shape or weight, they can still be diagnosed as anorexic.
Only a doctor or mental health professional can diagnose anorexia, though recognizing the symptoms in yourself or a loved one is an important step towards getting treatment.
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