Eating disorder predisposition toward eating disorders as a result of Mendelian inheritance. Twin studies have found a slight instances of genetic variance when considering the different criterion of both anorexia nervosa and bulimia nervosa as endophenotypes contributing to the disorders as a whole. A genetic link has been found on chromosome 1 in multiple family members of an individual with anorexia nervosa. An individual who is a first degree relative of someone who has had or currently has an eating disorder is seven to twelve times more likely to have an eating disorder themselves. Twin studies also show that at least a
Eating Disorder Inventory is a separate self-report form used to measure the frequency of symptoms, (i.e. binge eating; use of laxatives, diet pills; exercise patterns). The information provided by the EDI-3SC aids in determining whether the patient meets the diagnostic criteria as set forth in the Diagnostic and Statical Manual of Mental Disorders IV-TR (DSM-IV) for an eating disorder. The Eating disorder referral form (EDI-3RF) is an abbreviated form of the EDI-3 for use in non-clinical settings for use in the allied health professions. It contains 25 questions from the EDI-3 from the three scales that are specific to eating disorder risk. It