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Hollie Avil is a former triathlon World and European champion, who also competed in the 2008 Olympics, but - at 22 - she's just announced she's quitting the sport.

The Northampton-born athlete also intended to be at London 2012 but says that an eating disorder and depression meant she no longer enjoyed the training and competing.

Newsbeat spoke to Hollie to find out more about how her illness affected her life.

How did your eating disorder come about?

Being an athlete you're obviously pushing your body so hard and your body needs energy. It must have been incredibly difficult?

How do you feel now with the Olympics happening in a couple of months' time?

Some people may say that you've got to have a tough skin in sport - do you think you've left too early?

What about your future? Would you like to help other people who've gone through a similar thing to you?