How do you feel when you have anorexia nervosa?

Behavioral and physical signs include obsessing about weight, weight gain fears, eating only low-calorie foods, distorted body image, excessive exercising, feeling exhausted, dizzy, bloated, constipated, cold, irritable, distracted and unable to concentrate.

Do you have to be underweight to have anorexia?

Eating disorders affect around 1.25 million people in the UK, a quarter of whom are male, and less than 10% of whom are affected by anorexia.