From Science Daily: The school a girl attends can affect her chance of being diagnosed with an eating disorder. That's the conclusion of research carried out by a joint UK-Swedish team. The results were published in the International Journal of Epidemiology.
Researchers from Oxford University, UCL, the University of Bristol, the London School of Hygiene and Tropical Medicine and the Karolinska Institute in Stockholm used routinely collected data from Sweden to take account of individual factors that would make someone more likely to develop an eating disorder. Even after accounting for these factors, there were still differences in the rates of eating disorder according to the school attended.
Girls attending schools with higher proportions of female students, and high proportions of university- educated parents were more likely to be diagnosed with an eating disorder than girls at schools with lower proportions of female students and fewer university-educated parents.
Eating disorders, including anorexia nervosa, bulimia nervosa, binge eating disorder, and other eating disorders which don't fit so neatly into the classification system, affect 5.7% of adolescent girls. That's almost 2 in a class of 30. They are serious illnesses: someone with bulimia nervosa is around twice as likely to die young as someone without it, while someone with anorexia nervosa is about 6 times more likely to die young.