Psychiatric care for soldiers experiencing extremely stressful conditions could be more likely depending on their hormone levels.
This is the conclusion of a study carried out by scientists at Yale University and the VA National Center for Post Traumatic Stress Disorder (PTSD).
It found that soldiers with higher levels of the hormone Dehydroepiandrosterone (DHEA), which the adrenal gland produces in response to stress, were better able to manage stressful situations.
Dr Morgan commented: "Animal studies have shown that DHEA buffers against stress, in part, by modulating receptors in this region of the brain.
"These findings are important in understanding why and how soldiers may differ in their ability to tolerate stress and also raise the possibility that, in the future, compounds like DHEA might be used to protect military personnel from the negative impact of operational stress."
PTSD results in biochemical changes, which are dissimilar to other psychiatric disorders such as depression.