The only negative study I've heard about was a French study a couple years back. It was absolutely -blasted- within a couple months of its release for the blatant bias and utter lack of controls in performing the study. An absolutely shoddy piece of work.
Yet, of course, it's touted as proof that creatine is dangerous. What an utter load of crap. Most people are stupid, dangerous sheep. They'll jump to support information, no matter how blatantly flawed, so long as it supports their position, since it requires less effort than opening one's mind.
And I'm with Zeb. We haven't heard a thing about this kid's nutrition, sleep schedule, etc. Never mind his age.