About 300,000 U.S. troops returning from Iraq and Afghanistan sufferor depression, but about half receive no care, an independent study said on Thursday.
The study by the RAND Corp. also estimated that another 320,000 troops have sustained a possible traumatic brain injury during deployment. But researchers could not say how many of those cases were serious or required treatment.
Billed as the first large-scale nongovernmental survey of its kind, the study found that stress disorder and depression afflict 18.5 percent of the more than 1.5 million U.S. forces who have deployed to the two war zones.
The numbers are roughly in line with previous studies. A February assessment by thethat showed 17.9 percent of U.S. troops in Iraq and Afghanistan suffering from acute stress, depression or anxiety in 2007, down from 19.1 percent in 2006.