Facts To Know!! Eating disorders can occur in all genders across all races, ethnicities and socio-economic classes. Eating disorders are most often diagnosed in adolescents. Anorexia (an eating disorder) has the highest mortality rate among mental illnesses. Eating disorders are third most chronic illness in among young women. Unfortunately only 1/3rd people receive treatment for eating disorder Eating Disorders Watch short video introduction on what Eating Disorders looks like.