@ OP: I've not lost as much as some people here but I was 231lb at 5'8 and broke into the 150s last week. I think I'm 158-9 now. Easiest way for me has just been counting everything I eat, that way I...
Your weight actually has sod all to do with anorexia; 'Anorexia nervosa is an eating disorder characterized by excessive food restriction and fear, irrational fear of gaining weight, and a distorted...
Good job on the weight loss so far, I would put you anywhere between 18-22% bodyfat, it's hard to tell because you likely have a bit of loose skin after losing that much weight.