“A study from New York's Mount Sinai Hospital found that genetic changes stemming from the trauma suffered by Holocaust survivors were capable of being passed on to their children. Our genes change all the time when chemical tags attach themselves to the DNA and turn genes on or off. The study found that some of these tags--found in the genes of those survivors -- were also found in their children. The changes led to an increased incidence of stress disorders. This passing down of environmentally altered genes is called *epigenetic inheritance.*”
Book:Aftershocks