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Linebacker Junior Seau #55 of the New England Patriots warms up before play against the Miami Dolphins at Dolphin Stadium on October 21, 2007 in Miami, Florida.
Today on Good Morning America, it was revealed that former USC and San Diego Chargers star Junior Seau had the degenerative brain disease called CTE when he committed suicide by shooting himself in the chest.
Doctors at the National Institutes of Health told Gina Seau that her ex-husband indeed was dealing with the same condition that's been associated with dozens of former professional football players.
Seau now becomes the biggest name to be linked to CTE.
Joining us to discuss the impact of the Seau findings is Dr. Robert Cantu, Co-director of Boston University's Center for the Study of Traumatic Encephalopathy and a Senior Advisor to the NFL Head, Neck and Spine Committee.