I've had anorexia for almost one year now, and I've heard that, in extreme cases, a calorie deficiency can cause lanugo, which is development of fine hair all over the body. Can this hair go away after recovering from anorexia? Or does it just stay until the person shaves it off or removes it in some other way? I haven't had lanugo yet, and I'm curious to know the details of how long it lasts, where it mostly gathers on the body, things like that. Thank you.