Eating disorder maybe ?

I work in a place with a lot of women
& there's this one girl who has only started working in our work
i think she has either anorexia or an eating disorder
she never ever eats during the 8 hours that she is at work
she said the other day that she wants to lose 2 stone...i would
say this girl is roughly 9 stone and i know for a fact that she doesn't get on with family...she says everyone in her family is skinny and she's the ugly duckling!!
she also recently said she was anaemic but i know she should be eating..she also makes quite frequent trips to the bathroom..and every friday our boss buys us pizza or chinese or something but she always finds an excuse to not sit and eat with us e.g. like i have to cover the phone system
What do i do..do i get my line manager to talk to her or what..i generally worry for her, i think if i got someone she really gets on with in work to speak to her..we're all quite older than her and she's very young so please help thanks

You don't say how tall she is? 9 stone is not that light, unless your tall, but I think if she wants to loss two stone that amount does seem excessive. There could be another reason that she visits the toilet, I do that as I have a terrible bladder and need to go frequently, also when I was younger I was extremly shy and I would go there to avoid people. She may also not like to eat in front of people. Another thing that in my younger days I hated doing, but I loved food and I ate plenty when on my own. There are a few clues that could confirm your concerns and those are the comparisons she makes of herself to her family. As you seem like a nice person to be around her perhaps you could have a more one to one conversation with her and see if you can establish some more info as I agree with the comment that you can't make her change and if you go to your line manager then this might make things worst for her. Good luck.

Is it anything to do with you? I don`t want to be mean, but this is her problem (if it is a problem), not yours.
Many women of child bearing age are anaemic, simply by having monthly periods,
Not everyone likes stodgy foods like pizza.
If she has a problem, it is her responsibility to deal with it, which she will in her own time, not yours.

there is not a lot you can do

just let her know that if she needs to she can come to you and remind her every now and then in case she wants to but feels that the offer has expired

Maybe this girl is going through deppresion she needs everyones support at this time
plus maybe she could be self consious scared of doing things in this case eating when people are around.
give her some time

It sounds like she might have an eating disorder. But then, you never know...

I work at a University, and help to look after the students in Halls. I have a lot of experience in dealing with people with eating disorders - both alleged and admitted.

My advice would be to mention your worries to a colleague - either your supervisor, her supervisor, a "top" boss, or someone in a councilling type role. I'd also not mention her name at first, just ask a generic question - "What happens if I suspect someone has an eating disorder?" rather than "I think x has an eating disorder" - only mention her name when asked AND once confidentiality is ensured - she could (and probably will) get upset if she thinks you have been saying "She has an eating disorder" - despite your best interests and caring about her, she might see it as akin to you saying "Eugh, she's a freak!!!"

You might find that people higher up are already aware and are monitoring this - and can't discuss it with everybody due to confidentiality - if the person you report it to says "I can't discuss this" or seems to brush you off then they are most likely already aware - so at this point LEAVE IT.

You don't want to alienate her or have her complain about you, so be very general when raising it.

Also, if the "problem" is not affecting her performance at work then there really is no need for work to get involved - she could just be on an extreme diet, not like eating in front of others, have religious reasons for this - many things.