Dear Ann. My name is Betty and I am 14 years old, I believe that I am very fat and although I am only 5 stone I want to keep on dieting, everyone thinks that I am sick but I am not ,I want to keep on dieting until I am down to 3 stone but all of my friends are threatening to be-friend me if I don't eat, normally I throw up after I eat so the my family won't suspect anything can you help me.

Dear Betty, If you are 5 stone then you are not fat. So you must stop thinking you are. There is also no need for you to continue on dieting. If you do not stop you will lose your family your friends and your health. So please start eating normally.