• Anorexia Nervosa: Cases of Anorexia Nervosa have been described throughout history in many different cultural contexts, with the first medical descriptions dating back to the 19th century. The number of new cases presenting increased up to the 1970s and since then has been stable.
  • Bulimia Nervosa: Bulimia Nervosa is a newer disorder and between the 1980s and 1990s there was a dramatic rise in the number of cases presenting with this disorder. The largest proportion of people presenting for treatment being adolescents and young adults.