While abnormalities in the adrenergic and noradrenergic systems, both integral in the fight-or-flight response, are thought to play a role in the development of post-traumatic stress disorder (PTSD), until now there has been no genetic evidence of this connection. A collaborative study from researchers at Columbia University and the University of Michigan found an interaction between the ADRB2 gene and childhood adversity. For individuals with … Continue reading Evidence of genetic link to PTSD in soldiers exposed to childhood trauma.