Evidence about the harm that concussions cause to the brain is accumulating. The U.S. Department of Defense estimates that as many as 200,000 veterans already have suffered brain damaged because of concussions they received while serving in Iraq or Afghanistan. Other estimates place the number as high as 320,000 veterans. These “unseen” injuries are just one of the numerous hidden costs associated with both wars that U.S. taxpayers will continue to pay for decades to come. (Sharon Weinberger, “Bombs' hidden impact: The brain war,” Nature News, 21 September 2011, Vol. 477, 390-393 doi:10.1038/477390a)
Meanwhile, both the cost of the wars ($1.25 trillion) and death toll (7528 U.S. and countless Iraqis and Afghans) continue to increase.