I've known some people with eating disorders that (admittedly) took up veg*nism because it was an excuse not to eat fatty foods/much food at all.
One such person was my cousin's cousin who first said she was a vegetarian, then that she was a vegan, then came up with more and more excuses for why she couldn't eat another food and another food and another food. She's currently quite ill.
And before anyone jumps all over me... OF COURSE not all veg*n persons with eating disorders use it as an excuse, but with the people I've dealt with directly in my life, this was the trend the majority of them followed. I think its also possible that people with eating disorders, as well as other psychiatric disorders, are more sympathetic and tuned in with the feelings of others, both humans and animals, and may have more of a conscious when it comes to harming them.
I'm a finicky eater, but I suffer from irritable bowel.. which sort of dictates a picky lifestyle. I became veggie BEFORE this came on full blown, and I can't imagine how much worse it would be if I wasn't already maintaining a low fat high fiber diet. A vegetarian lifestyle is ideal for an IBD sufferer
Also, there is a CORRELATION between eating disorders and veg*nism. That does not mean that one causes the other in either direction. There is probably a third (or fourth or fifth or sixth or seventh) reason for the connection between the two.
(For people behind on their statistics.. a correlation is basically when one "thing" increases with another "thing" which looks
like it could be a cause and effect, but it isn't necessarily so. For example: there is a correlation between children with a larger shoe size and their reading level. The bigger the shoe size, the higher the reading level. This does not mean that big feet mean better readers. The third part to this equasion is that OLDER children have BIGGER feet, thus it is true that larger shoes -- older children -- are at a higher reading level than smaller shoes -- younger children. Thank you for attending my Statistics class. You all get an A for reading this far.)