British Medical Journal

Photo: Tyler Hicks, via Scientific American What if you could predict which troops are most likely to get PTSD from combat exposure -- and takes steps to either bolster them mentally or keep them out of combat situations? A new study suggests we could make a start on that right now -- and cut combat PTSD rates in half by simply keeping the least mentally and physically fit soldiers away from combat zones. The study was part of the Millenium Study, huge, prospective study in which US Department of Defense researchers have been tracking the physical and mental health of nearly 100,000 service…