Do you mind if I ask? Peita and Madi

But after undergoing weight loss surgery, the mental illness which had ruled her life took on a new, equally sinister persona: anorexia nervosa.

But it wasn’t until she collapsed at Madi's 14th birthday that she realised something was seriously wrong.

This is their story.

If you need support for an eating disorder, call The Butterfly Foundation support line on 1800 334 673 or contact Eating Disorders Victoria on 1300 550 236.

For other crisis and counselling services, call Lifeline Australia on 131 114, BeyondBlue on 1300 224 636 or Kids Helpline on 1800 551 800.