Researchers have identified evidence of early Chronic Traumatic Encephalopathy (CTE) brain pathology after head impact—even in the absence of signs of concussion. Early indicators of CTE pathology not only persisted long after injury but also spread through the brain, providing the best evidence to date that head impact, not concussion, causes CTE.

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A brain disease best known for impacting football players who suffered concussions is now being found in soldiers

Until a few years ago, NFL players who struggled with severe depression, bouts of rage and memory loss in their retirement were often told they were just having a hard time adjusting to life away from the game. Doctors have since learned these changes can be symptoms of the degenerative brain disease CTE -- chronic traumatic encephalopathy, caused by blows to the head.

What we're learning now is that CTE isn't just affecting athletes, but also showing up in our nation's heroes. Since 9/11 over 300,000 soldiers have returned home with brain injuries. Researchers fear the impact of CTE could cripple a generation of warriors.

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