Don't cop to Anorexia so fast. You are not too thin....and neither am I ! You are 5'7" 120lbs.? That's not bad at all but you must not, MUST NOT ever "purge!!! That is sooooo bad for you. I am 5'4', 96.4lbs. and not at all worried about it. Watch everybody jump on me for saying that......My shrink is all concerned and wants me to get on CBD (??) medical Marijuana because I have no appetite. Two meals/day is about all I can do, too, but I pick GOOD foods to eat and NO meat. Take your vitamins and supplements like Strontium Citrate for your bones & teeth. Check out "Puritans' Pride" online for good vits. & minerals. Thin is fine as long as you are healthy and feeling strong. Eat salad w/ tuna or HB eggs in it. Just eat RIGHT and don't worry so much about quantity. If you get down to say, 100#, then you'll need help. Let me know how you're doing and don't worry yourself to death! Shalom, Channah