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Preview: A Blow To The Brain

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Uploaded by on Oct 8, 2009

Neuropathologist Dr. Ann McKee explains the impact repeated concussions can have on your brain. Bob Simon reports on new research, this Sunday, Oct. 11, at 7 p.m. ET/PT.

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  • Im only 10 and i've suffered 2 concussions.... one from a direct hit to the head in paintball and another one while mountain biking!

  • I suffered a traumatic brain injury in '94 that left me in a coma for 2 weeks. This is scary.

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