<b>The world has long misunderstood trauma. Now, leading experts in the field have a radical new understanding of post-traumatic stress . . . and a surprising new treatment to reverse it could have profound implications for medicine, mental health, and society.</b><br><br>Despite its prevalence, post-traumatic stress, PTSD, is often seen as an unbeatable lifelong mental disorder. However, top trauma doctors and neuroscientists now understand that the result of trauma is not a disorder, but rather a <i>physical injury</i>—and while invisible to the naked eye, the posttraumatic stress injury (PTSI) can now be seen on a scan. Most importantly, the effects of PTSI are <i>reversible</i>.<br><br>Meet Dr. Eugene Lipov. His research and partnerships have led to an amazing discovery that all trauma has at its root a single piece of human hardware: the sympathetic nervous system, controlling the fight-or-flight response. Anyone who has endured trauma, including long-term microdoses of