I have just recovered from measels. I was diagnosed about three weeks back and was booked off work for 10 days where I could not eat all I do is drink juice or water and eat fruits. I have no appetite for food and its worrying me. I have been back at work for a week now and still I can't eat. I have lost wieght and I want to gain it back. The only way is eating. I need help to regain my appetite.

You should speak with your doctor about this one. Tell him/her everything you've said here. How was your appetite while you were actually ill? That sounds like a significant consideration.