Worried about My Best Friend.........:/

Shes only been eating between 350-700 calories a day and loosing weight really fastttttttt. Shes not thin thin......Shes gone from 220 to 180 in less than 2 months. Is this a serious problem or not? I don't know much about eating disorders so any info would b awesome!! Is she borderline anorexic? Don't you have to eat way less and be skinner than 180 to be classified as anorexic? I'm probably making a big deal out of nothing. I think she is 5'6... 25 years old

She may not be underweight but she's certainly not eating properly by crash-dieting like that.  (If indeed that's what she's really doing and assuming that she's not tucking down chunky suppers when you're not around!)  She hasn't secretly had a lap-band fitted has she?  Those poor people physically can't eat very much.  Disordered eating behaviour covers a multitude of sins and voluntarily choosing to starve is one of them.   There are other 'signs' and tricks to look for...  refusal to eat in front of other people, excessive exercise, irrational fear of certain foods, claiming to have 'already eaten' when going out to dinner, belief that their behaviour is entirely normal or that any concerns you have are driven by jealousy.

Someone consuming so little could expect to see problems associated with malnutrition quite quickly.... fainting, concentration issues, skin problems, hair-loss, anaemia, depression, loss of periods, palpitations, lowered immune system....  And disordered eating often stems from insecurity, unhappiness, depression, stress.   Talk to your friend about how she feels about herself and keep an eye on her.   Maybe invite her over for dinner..... ?

No she doesn't have a lab band. I took your idea and invited her over for dinner. I cooked some chicken,corn,a nice salad. I thought by cooking healthy dinner she might eat. She didn't even eat half!!! She said she felt sick. I wanted to say something to her but I diddn't...instead I told her I am eating around 1600-1800 calories per day and loosing  1-2 lbs a week. She said OMG I have to atleast loose like 5 pounds. Any more ideas? My other friend thinks she is just doing it for attention. Do you think that could be possiable...?

She wouldn't be the first or last overweight person that thought a crash diet would give her quick fix results.   The drama-queen stuff about feeling sick half way through a chicken salad (prettty rude thing to say when someone has cooked a meal BTW) and wanting to lose 5lbs a week does lend credence to the attention-seeking suggestion.   People who are serious about weight-loss (like you) tend to just get on with it and not make a big fuss.  Most people with a genuine eating disorder would have not turned up for the meal in the first place (which was partly the reason for suggesting it)

I wouldn't do anything further.   Stay with your 1600-1800 a day, lose your 1 - 2lbs a week, keep setting a good example and ultimately you'll end up reaching your healthy weight and probably staying there for a long, long time.  Keep an eye on your friend, obviously, but don't talk about dieting or make any remarks about weight-loss - yours or hers.   If you don't reinforce her behaviour she might stop competing? attention-seeking?.... who knows?   

I was a 245lb bulimic. So its a myth that people with ed's are skinny/underweight. I did what shes doing (I'm not proud of it by the way!) and got down to 147lbs. Of course I didn't stay that weight- once I started 'eating' again I went up to 159lbs and stayed round that for years. Then I got married & had kids & gained 26lbs, so decided enough was enough- time to shift this weight once & for all. I had been overweight all my life, and had just been dumped when I lost the 100lbs- it certainly wasn't for 'attention'- well, not in the way I think you guys mean? I wanted to look 'normal', and once I discovered I could lose weight by not eating- away I went! Of course now I'm older and a LOT wiser, and know that wasn't the way to do it- but I was blinded by the results? Maybe she too has become totally fed-up with being the 'fat' friend, and now that shes seen results doing it like this, she doesn't want to stop? I agree with GI Jane, let her see you eating properly and still losing and maybe she'll get some sense along the way? She needs to be educated, but may not be ready to listen yet?