"Turning the pages and gazing at the models with their protruding collarbones and rib cages, she wished she could one day look like them. Staring at her reflection in the mirror, the 15-year-old felt disgusted by what she saw. She vowed not to eat another mouthful for at least two days. Yet at the time she was envying the stick-thin girls in the glossies, 5ft 5in Emma weighed only 4st 10lb."