Experts estimate that up to 20% of U.S. troops returning from Iraq and Afghanistan suffer from post-traumatic stress disorder, a condition that can be stubbornly difficult to treat.
But what if PTSD could have been prevented in the first place?
Scientists have done something similar in traumatized mice. Days after a harrowing experience being restrained on wooden boards, they were given a drug that triggers a brain receptor thought to be involved in how mice — and people — respond to fear.
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