I work with a girl who I started with five months ago but who almost immediately went on sick leave. She's just come back but on a reduced schedule, starting and finishing later. She also often does a four day week or less. It's none of my business but I've noticed shes very slim and doesn't really ever eat much, while going to the gym every day normally. I know I should myob and I do. I'm just wondering whether an eating disorder related illness would necessitate these measures being taken?