Delfina Carle, 17, shared harrowing photographs of herself when she was in the grips of her eating disorder.
Now the teenager, who weighed just 5.5st (35kg) three years ago, hopes her story will help other young people with the condition.
She said: “I didn’t see myself as fat. I realised I was very skinny but I said to myself: ‘Let’s see if you can be even skinnier’.”
The shock came when her parents, from the town of Daireaux, in eastern Argentina’s Buenos Aires province, took her for tests and the doctors would not let her out because she was so underweight.
“I realised I was very skinny ”
Although hearing the word anorexia for the first time gave the teenager a shock, that wasn’t the turning point.
It only came when a problem with her feeding tube twisted and the liquid nourishment started going into her lungs – instead of her stomach – leaving her unable to breathe.
She continued: “I was hospitalised with anorexia, but now I help other women love the skin they’re in.”
Delfina told the medics not to re-attach the feeding tube and promised to start eating again – which is when she put on weight.
After completing rehabilitation treatment, the teen was allowed home and her family threw a huge party for her.
But her recovery from anorexia wasn’t complete, as Delfina revealed she would pretend to eat but give the food to the family’s dogs or hide it in her pockets.
Delfina said: “I started to take laxatives because I felt I needed to get rid of everything inside, even though I had eaten one biscuit.
“At first my mother was watching me when I took my psychiatric pills but when she stopped doing that I started to throw them away.
“When I went to the nutritionist, I drank a lot of water or I wore rings, watches and bracelets so they didn’t notice I had lost weight again.”
Even though Delfina thought she would never beat the condition, she started to seek help online.
Delfina also began distracting herself by listening to music, reading a book or calling someone she loves.
Now she is finally close to her ideal weight, is enjoying life and has found a boyfriend.
Delfina concluded: “Today, even though I’m not completely happy with my body, I fight, I fight and I go ahead, and when I look in the mirror I see a girl sometimes happy, sometimes not so much, like everyone, right?”