Chrystall, from Scotland, is now an amateur MMA fighter.
She suffered wit anorexia from the age of 11, until she was 18. She said in an interview with Bleacher Report:
Suddenly I said, 'I can't do this to myself or my family’. It was a very slow process with lots of ups and downs. I never really wanted to get better. There's mental and physical and emotional stuff going on. It's not just 'eat and get better’. ' It's so hard for people who haven't been there to understand
I put the emphasis now on being strong and fit and healthy, rather than looking like a skeleton. I still have these thoughts, but in a place where I can logically battle them.