NFL concussions

Gregory Bull / AP Photo

The tragic death of NFL star Junior Seau has raised some questions about whether the hard hits he was involved in on the field somehow contributed to his apparent suicide.

The body of the 43-year-old linebacker was found Wednesday. Authorities say he left a note, although the contents of the note have not been revealed. Police have confirmed that Seau was shot in the chest. Does that mean he wanted his brain to be preserved for research, similar to the wishes of another former player who recently killed himself?