Ken Shamrock bristles when people immediately point to steroids or head trauma when an athlete falls ill or dies.
"If you look at businesses or divorces, people kill themselves because
of depression," he told MMAjunkie.com Radio.
"Because they've done something in their life for so long, some people
don't know how to deal with that.
"It can't just be head trauma, man, because it happens in places where they don't get head trauma."