The book definition of PTSD is: Ordinary reactions to an extraordinary event. In laymen's terms I say PTSD is:
 Trauma induced behavior. Some examples would be: you are in an auto wreck, both your parents die, 20 years later
 you are an alcoholic. You are molested as a child,  later in life you become a drug addict. You go to war and everyone
 dies but you, that experience ruins your life.

    The conclusions of this research paper are that trauma can change the structure of an individuals Genetic makeup.
 That changed genetic structure can then be passed on to the children of the traumatized individual who can in turn
 pass the altered genes onto their children.

    Supporting evidence includes the fact that the children of Australian Vietnam Veterans with PTSD are 35% more
 likley to attempt  suicide than the children of  Australian Vietnam veterans without PTSD. The children of Veterans
 with PTSD are more likley to abuse drugs and alcohol than their peers. They are more likley to act out, display
 violent and anti-social tendices and practice self destructive behavior.

    This ground breaking research is critical to hundreds of thousands of combat veterans and victums of traumatic
 events who wish to understand and treat PTSD.