A study published this week in Nature Neuroscience finds that traumatic stress in early life altered mouse microRNA (miRNA) expression, and behavioral and metabolic responses in the progeny. The researchers found that injecting sperm RNAs from traumatized males into fertilized eggs reproduced the behavioral and metabolic alterations in the resulting offspring.
Gapp, K., Jawaid, A., Sarkies, P., Bohacek, J., et al.; Implication of sperm RNAs in transgenerational inheritance of the effects of early trauma in mice. Nature Neuroscience. Online April 13, 2014 doi:10.1038/nn.3695
Sperm RNA Carries Marks of Trauma (Scientific American)
Sperm RNA carries marks of trauma (Nature)
Effects Of Traumatic Experiences, Like Depression, Could Be Passed On To Our Kids (Medical Daily)