All psychophysiologic issues are of great importance.
Let_s set aside someone who has sustained a pancreatic injury at work and cannot produce insulin and look at the more difficult cases to understand/fathom.
If you do not have a psychological exam on this patient, and he/she is depressed, sleep will likely be disturbed. It has been shown Americans are getting less sleep. With less sleep comes the production of substantially less insulin. If the individual is depressed, they may well be getting less than the mandatory 7+ hours of sleep.
If the individual is in chronic pain, he/she may be getting less than the mandatory hours of sleep, and/or if he/she has marital, financial or family pressures, he/she may be obtaining less than optimal hours of sleep. Once again, all of this has been associated with onset of Type 2 Diabetes.
Further, if you do not have a psychological exam, you do not know if the patient is exercising, sedentary, his/her dietary intake and other complicating/contributing risk factors.
Since this sleep-diabetes link has been established, we simply need to know more about the post-injury lifestyle and its health implications. These are not issues typically investigated in depth, but they need to be.