How infrequent is it to be cutter, anorexic or bulimic?

Not rare enough: In my practice there has been a great deal of overlap between eating disorders and cutting. Especially among young women who felt pressure to be perfect and who were very frustrated by anger that they couldn't express. Anyway - the frequency is not important. Getting help is! And, you can. Psychotherapy works (if you want it to.) The EDs can do serious bodily damage, so it is important. Best 2U!