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Studying the brain in violent sports
April 18, 2012
(CBS News) There's been a lot of concern about concussions among kids and adults who play football and other contact sports. A new study was presented recently to the American Academy of Neurology which looks at fighters. It finds three parts of the brain begin to shrink after nine years of repeated injury.

CBS News correspondent Lee Cowan reports that while the results are only preliminary, the research hints there's a correlation between repeated blows to the head, and neurological problems, especially loss of memory.

He was one of few boxers to ever take a title away from Muhammad Ali,
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