Funny, my T & I just had a similar discussion as a result of a TV program which showed brain scans of people as they viewed different pictures and videos, reasoned a political issue. My T said amazing work is being done that shows the long term physical (including brain function) biological changes caused by abuse. Vice versa too. We opined on what this may mean for talk therapy. He said some formally 'psychiatric problems' are now being moved to the biological side of the menu & the roll of medcations reevaluated.