Though technically, part of the clinical diagnosis of Anorexia Nervosa is losing 15 percent or more of what your
normal body
weight should be, you do not need to be super thin in order to have an eating disorder. Most of what an eating disorder, such as Anorexia, consists of is the emotional/mental aspect.. being scared of gaining weight, thinking you're fat when you really are healthy, starving yourself or severely limiting food quantity or types of foods, etc.