A Shock Wave of Brain Injuries

About 1,800 US troops are now suffering from traumatic brain injuries (TBIs) caused by penetrating wounds. But neurologists worry that hundreds of thousands more - at least 30 percent of the troops who've engaged in active combat for four months or longer in Iraq and Afghanistan - are at risk of potentially disabling neurological disorders from the blast waves of IEDs and mortars, all without suffering a scratch. For the first time, the US military is treating more head injuries than chest or abdominal wounds, and it is ill-equipped to do so.

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