A 10-year-old boy has a genetic disorder that causes him to eat toilet paper if he is not fed.
Caden Benjamin, a boy from Standerton, South Africa, now weighs 88 kilograms.
Caden has been diagnosed with Prader-Willi syndrome, which means a powerful urge to eat.
"She will eat toilet paper, she will eat it a full roll," said Caden's mother, Zola Benjamin.
"More than that, Caden will eat whatever he finds on the floor if there is no food," he added.
Caden underwent a tracheotomy a few years ago and now he has to breathe through a tube inserted into his throat.
At the age of three years Caden already weighs 38 kilograms, but the mother did not know what was wrong with her son.
Finally a doctor in Pretoria, Gauteng Province, could explain the illness Caden suffered on his mother.
Prader-Willi suffered thousands of people in the world and caused limited growth and reduced muscle growth.
Patients can not consume more food because their bodies burn fewer calories.
"Usually he starts the day by eating four slices of cheese bread and an hour later he will drink cola and eat leftovers from the night before," explained Mrs. Caden.
"At lunch he will eat two large chunks of chicken, he will eat once per hour for the rest of the day," he added.
Mrs. Caden admits she now has to lock all the cabinets in the kitchen along with the refrigerator and hide all the food in her home.
Caden himself had to fight hard to move and breathe because he was so overweight.
Unfortunately, Caden also suffers from depression because he feels he can not live like a normal child.
"Sometimes he will cry and say he wants to go play with other kids outside but he can not do that and I can not help him," explained Caden's mother.