mgoblogging

http://mgoblog.com/mgoboard/cte-found-99-former-nfl-players-new-study

This is extremely well done by the "op" (original poster).  Read the comments if you wish (I haven't).  He or she explains a "convenience sample" and also provides a potential blueprint for parents:  you may decide for yourself when you are old enough.  I infer that (probably) he understands that the brain is more vulnerable in children.

The discussion of "how will it change football" is entirely speculative because for now it barely has had an impact unless, as the OP makes us aware, parents take control.  In terms of the number of teams, players, revenue, etc.  the long-term affect has not had an impact.

The idea of a convenience sample leads to questions.  What about other star players who don't exhibit signs of the disease?  To that the answer may well be you too are at serious risk.  But, fuzzier still, what are the risks in playing youth, high school, and college football?

My personal guess is that if you play big-time college football, if you are that good and take it that seriously, you are at serious risk.  And, if you play below that level, you must monitor concussions or other signs very closely.

Remember, once it starts there is no turning back and no cure.  Your life is going to be extremely difficult, the people around you will be heavily-taxed, and you will die.