Remember "shaken baby syndrome?" The babies can even die from the brain trauma. Now, their necks are not strong, but then again, they're not doing it to themselves on purpose. So I would guess that, if you tried hard enough, anything is possible. Besides, this is an industry where highly successful individuals and groups break apart and ruiin their careers because they "have dry spells", have "creative differences", put out work that suddenly stinks, are known for "self-medication" to the point of repeated rehab, or overdose and death, ruin their personal relationships........how do you know that this ISN'T caused by slowly or rapidly building brain damage? Not exactly a well-controlled group to study.

Don't do it. why take the risk?