http://goo.gl/gHTzMB
In study 1 we found higher levels of basal DNA breakage in individuals with PTSD and trauma-exposed subjects than in controls, indicating that traumatic stress is associated with DNA breakage..... In study 2, we found that psychotherapy reversed not only PTSD symptoms, but also DNA strand break accumulation. The results of the study showed - for the first time in vivo - an association between traumatic stress and DNA breakage; they also demonstrate changes at the molecular level, i.e., the integrity of DNA, after psychotherapeutic interventions.