No Minty but I don't believe anyone is genuinely concerned here at all, it's just gossip and judginess, if anything, some people enjoy a lovely rant about how so and so is 'too thin', and has had 'work' done and other irrelevant nonsense just being snippy about anything if someone is a celeb.
She might have anorexia, so might I, so might you, so might ohh let's say Jimmy Carr, or Leona Lewis, or Jasper Carrot, we don't know. But there is absolutely no evidence of that at all, and enjoying speculating about it is just grim, and it is bodyshaming thin people. She's thin, that does not necessarily mean depressed, disordered eating or anorexia, which is a serious mental illness not at all the same as just being very slim.