4. Anorexia most often has its onset in adolescence and is
most prevalent among adolescent girls. However, more
recent studies show that the onset age of anorexia
decreased from an average of 13 to 17 years of age to 9
to 12.It can affect men and women of any age, race,
and socioeconomic and
cultural background, Anorexia nervosa occurs in
females 10 times more than in males.