Can rough martial arts, like Jujitsu ruin your spinal disks and cause skeletal and muscle problems?

The difference between, being knocked out, brain cells dying and death is a very short time. Brain cells start to die in a matter of seconds after you fall unconscious. So technically yes it does.

But how many it cells does it take to become noticeable is another story.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.