Anorexia and bulimia are eating disorders and behavior that affect women and men in particular. Though he did not really talk.
Nutritional disorders are some of the most common mental health problems among young people around the world, according to the World Health Organization (WHO).
The number of children affected by this disorder is increasing. And experts believe that, in part, it is due to the pressure exerted by social networks.
Health experts also see how "vigorexia", the obsession with defined muscles and a good body, is becoming more and more common among adolescents.
"I felt alone"
Jack started controlling what he ate when he was 12 years old. He felt intimidated at school, where he was called fat.
At the same time, his parents decided to break apart. Remember that he felt sad and that he had no control over his life.
"I stopped eating because my body was the only thing I could control in my life." So he began to eat less and do many exercises. Too many
Sport has become somewhat obsessive, essential: I had to run to burn calories that I swallowed.
In less than two years, Jack became very sick. He could not go or talk with his friends. I could not stay awake for a long time.
The turning point says it was when he admitted "he had a problem" and he realized he needed help.
She went to see her doctor, who sent him to the British mental health service for children. He was hospitalized. There they took care of him and helped him to improve.
They also made him talk about his problem. They gave him a meal plan that made him eat healthier and his relationship with the sport changed. It's about enjoying it, not the obsession about it.
One of the other important things he did was leave all social networks. He said that people's photos and comments did not help him improve.
For him, networks have become a sort of "noise" with negative images and words that have not helped them at all.
Little by little, he began to see that his appearance was not the most important thing. After six months, under the constant supervision of doctors and his family, he thought it was time to do it for himself.
He is now 20 years old and completely recovered from anorexia. He says if he talked to anyone earlier about what happened to him, he would not have been so sick.
The role of social networks
Child Psychiatry Sandeep Ranote says the BBC says there is no research to show that social networks cause eating disorders, but it ensures that things get worse.
"Many platforms such as Instagram and Snapchat are based on publishing editable images (with effects and filters). They are not real … That may make young people think this should be true.
"Seeing this permanently can make you feel that you are not good enough and that emotional health can be affected."
Newsround spoke to some children in the ninth and tenth school years (14, 15 and 16 year olds) and said they felt pressured by what they should look like on networks.
A teenager said he would like to have "more muscle" and another said he would like to be "thinner." Another said, "People judge you as it looks."
The boys also said that social networks make them feel they should look as good as the celebrities who upload their photos there. That he has to wear clothes and look good.
Some even argued that failing to meet their expectations makes them feel bad about themselves.
How to get help
If you have problems with feeding, the faster you can help, the better. As the dangers to your health get worse, the more you let them go.
There are many associations and institutions that can give you advice and help. But above all, trust your doctor. They know everything about mental health and they will not judge you, they are there to give you support.
Your doctor will then direct you to a specialist who can provide you with specialized assistance.