University of Southern Denmark the new study:has found genetic susceptibility may be the main factor in a person's likelihood of progressive degeneration in the spinal discs, which can be a cause of chronic back and neck pain.
Understanding how genes and environment interact to create health problems is a "prerequisite" for preventing them, noted Dr. Jan Hartvigsen, a professor at the University of Southern Denmark
A surprising finding from this study, Hartvigsen said, was that the importance of genes in different types of pain -- including chronic, long-standing pain or more intermittent, recurrent pain -- was "remarkably similar."
Read more: http://www.nationalpost.com/arts/story.html?id=2187278#ixzz0WGMmsJUZ
Interesting that in this study they used twins but did they look at what the occupation or hobbies that these people did?