prader-willi syndrome

Just 10 months old, Luis Manuel Gonzales (Mexico) weighs 28kg, making medicine impossible to explain.

Every minute of waking up during the day, 14-year-old Hannah Wilkinson (USA) must fill her fierce hunger.

Ben Green, 10, has always been supervised by his parents for hours to prevent him from eating anything in his hand ... including cat food and toothpaste.