Don McPherson : Football 's Junior Seau , who committed suicide , to be memorialized today . He says research shows punishing head injury , living with pain leads some to suicide . Comment: McPherson : Junior knew there were signs he was in trouble , did n't know how to get help .
Don McPherson : Football 's Junior Seau , who committed suicide , to be memorialized today . He says research shows punishing head injury , living with pain leads some to suicide . He says he has his own scars from football ; Junior 's death a sobering reminder of toll . McPherson : Junior knew there were signs he was in trouble , did n't know how to get help .