Original sentence: Although there is no evidence to suggest that eating disorders are widespread amongst vegans, some nutritionists consider that a " self-reported " vegan diet can also be a warning sign for anorexia where other symptoms exist.Non-vegan anorexics  and pro-ana communities have been known to suggest using a poorly balanced vegan diets as a cover for anorexia , the eating disorders predating the adoption of a vegan diet
Edited sentence: A 1987 review of 116 cases found that in only 6.3% did meat avoidance predate the onset of anorexia nervosa.According to the ADA, the evidence suggests that the adoption of a vegetarian diet does not lead to eating disorders, but "vegetarian diets may be selected to camouflage an existing eating disorder".In some instances, female atheletes may become vegetarians to attain a lean body, and coaches should be alert when an athlete becomes vegetarian to avoid the development of an eating disorder.Pro-ana communities have been known to advocate poorly balanced vegan diets as a cover for anorexia.Some nutritionists regard a self-reported vegan diet as a warning sign for anorexia among young women.The American Dietetic Association acknowledges that vegetarian diets may be more common among adolescents with eating disorders than in the general adolescent population, and that professionals should be aware of adolescents who limit food choices and exhibit symptoms of eating disorders.Though there may be a correlation, there does not appear to be causation; eating disorders usually predate the adoption of a vegan diet.Vegan dietitian Brenda Davis claims that current research indicates that as many as 50% of people with anorexia nervosa or bulimia nervosa are vegetarian