"So why do it? I don’t know, really... It’s an addiction and a compulsion, a brain disorder and a crutch, your best friend and worst enemy, a fight between body and soul. Anorexia is an illness which takes on a life of its own, feeding on itself as you starve. It’s a voice in your head which never, ever shuts up."

Read Emma's story in The Times on Saturday 6th November and follow her weekly progress at www.timesonline.co.uk/bodyandsoul