UK Combat PTSD study amygdala

Notice when the original study was done on this,,,,,

Soldiers With Small Amygdala Could Face Greater Risk of Post-Traumatic Stress Disorder
By HANNAH OSBORNE
November 6, 2012

The part of the brain that regulates fear and anxiety is considerably smaller in combat veterans who are diagnosed with post-traumatic stress disorder (PTSD) than in those ex-soldiers who do not suffer the condition.

Researchers at Duke University and the Durham VA Medical Centre have found clear evidence that a smaller amygdala - the area that deals with fear and anxiety - is associated with PTSD.

Rajendra A Morey, assistant professor at Duke and lead author, said: "Researchers found 20 years ago that there were changes in volume of the hippocampus associated with PTSD, but the amygdala is more relevant to the disorder

"It's associated with how fear is processed, especially abnormal fear processing. So it makes sense to look at the structure of the amygdala."

In the US, between 11 and 20 percent of veterans from the Iraq and Afghanistan wars get PTSD. It is believed that around 30 percent of soldiers from Vietnam suffer from the disorder.
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