Duerson

The Bears released a statement Friday saying they were "stunned and saddened" by the news and called Duerson "a great contributor to our team and the Chicago community."

The Full Feed from HuffingtonPost.com The Huffington Post News Editors 2011

The recent suicide of Dave Duerson, the former Bears safety, who donated his brain to science, was either a first down or the final time-out of the game.

Marian Salzman: Friday Night Blights Marian Salzman 2011

However, the shocking and untimely death of former Chicago Bears player Dave Duerson cruelly reminded me of a fact and wake-up call that more fans need to internalize and wake up to like clockwork.

Derrick K. Baker: Fans' Intimate Familiarity With Athletes Is Overrated Derrick K. Baker 2011

Duerson, whose son told the New York Times, wanted "to be a part of the answer" and therefore took his life in a calculated way, won't be forgotten for years to come.

Derrick K. Baker: Fans' Intimate Familiarity With Athletes Is Overrated Derrick K. Baker 2011

I've purposely belabored the point because Duerson's unnerving death has made me and many of my contemporaries think yet again about the frailty of life and how tomorrow isn't promised to any of us - even when your life ends at your own hands.

Derrick K. Baker: Fans' Intimate Familiarity With Athletes Is Overrated Derrick K. Baker 2011

The recent suicide of Dave Duerson, the former Bears safety, who donated his brain to science, was either a first down or the final time-out of the game.

Marian Salzman: Friday Night Blights Marian Salzman 2011

In recent years, 11 deceased football players and four dead hockey players have been tied to CTE, including former NFL players David Duerson, who committed suicide in February and asked specifically that his brain be donated for CTE research, and Corwin Brown, who recently said he will claim in court that brain damage related to CTE caused him to hold his wife hostage.

Law & Order: SVU Guest Treat Williams Tackles CTE in "Deeply Moving" Episode 2011

The recent suicide of Dave Duerson, the former Bears safety, who donated his brain to science, was either a first down or the final time-out of the game.

Marian Salzman: Friday Night Blights Marian Salzman 2011

The recent suicide of Dave Duerson, the former Bears safety, who donated his brain to science, was either a first down or the final time-out of the game.

Marian Salzman: Friday Night Blights Marian Salzman 2011

Nor do you need a psychology degree to interpret the suicide note left by former All-Pro defensive back Dave Duerson, who, before he took his life on Feb. 17, wrote, "Please see that my brain is given to the NFL's brain bank."

The NFL's Standardized Concussion Tests Allen Barra 2011