Between the battlefield and the athletic field, the topic of Traumatic Brain Injury (TBI) has been much in the news in recent years. America's protracted wars in Iraq and Afghanistan, according to figures compiled by the Defense and Veterans Brain Injury Center, contributed to roughly 60,000 deployment-related diagnoses of TBI, from blasts and other causes, in US military personnel since 2000. (And that number represents only about 20 percent of the roughly 300,000 overall cases of TBI in the military during that period, due to vehicle accidents, training mishaps, and other incidents).
In the sporting world, American football has also come under scrutiny for its hazards to players old and young--from the cumulative damage of multiple concussions over a long professional career to, as the New York Times recently reported, fatal brain injuries to teenage players.
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