'Anorexia is like a bully, it won't let you stop'
This week Newsround takes a close look at how the pressure to look a certain way can drive some young people to take extreme measures.
The charity BEAT says more than one and a half million people in the UK are affected by eating disorders like anorexia or bulimia.
Many of them are teenagers but some are as young as eight years old.
Hayley went to meet Moreven who wanted to tell her story.