300,000 US troops who served in Iraq and Afghanistan are suffering from major depression or post-traumatic stress disorder. This, according to a new study by the RAND Corporation. Researchers say nearly 20 percent of the troops who served in the war zones are suffering PTSD and depression, but only half of them have sought treatment. RAND researcher Terri Tanielian said, “Unless they receive appropriate and effective care for these mental health conditions, there will be long-term consequences for them and for the nation.” The study also estimates that 320,000 service members had experienced a possible traumatic brain injury while deployed. Researchers say female soldiers and reservists had the highest rates of post-traumatic stress disorder and major depression. Meanwhile, in Texas, the Dallas VA Medical Center has been forced to close its psychiatric ward to new patients after the suicides of four veterans this year.