Does the impact of psychological trauma cross generations?
In groups with high rates of posttraumatic stress disorder (PTSD), such as the survivors of the Nazi Death Camps, the adjustment problems of their children, the so-called “Second Generation”, have received attention by researchers. Studies suggested that some symptoms or personality traits associated with PTSD may be more common in the Second Generation than the general population. It has been assumed that these trans-generational effects reflected the impact of PTSD upon the parent-child relationship rather than a trait passed biologically from parent to child. However, Dr. Isabelle Mansuy and colleagues provide new evidence in the current issue of Biological Psychiatry that some aspects of the impact of trauma cross generations and are associated with epigenetic changes, i.e., the regulation of the pattern of gene expression, without changing the DNA sequence. They found that early-life stress induced depressive-like behaviors and altered behavioral responses to aversive environments
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