PTSD in war soldiers might change the brain's stress system in others
Your stress is in my brain

Researchers have discovered that stress transmitted from others changes the brain in the very same way as a real stress does. This surprising effect of transfer of stress was found in a specific population of brain cells in pairs of mice, from which one had been subjected to mild stress before it was returned to its partner. This effect was partially reversed in female, but not male, mice following social interaction. The results show the importance of social contact after stress, and may explain why family members of some soldiers with post-traumatic stress disorder (PTSD) display PTSD symptoms themselves.

Read the full story: University of Calgary
Scientific publication: Nature Neuroscience