I'm with rjb on this one. I have congenital irritable bowel syndrome, and I'm in a constant world of intestinal pain/discomfort (which has a direct impact on my emotions/mood as well). Now, I could be having incredible cramps and pain, but if I smoke DMT, it completely vanishes. Like rjb said, it's like I can feel my stomach unknotted, and pleasantly and efficiently doing it's job like it's supposed to. It's like an insta-cure, and thank god the cramps don't come back after those brief 5-10 minutes of respite. At first I thought that this happens due to a shift in body awareness, but I realize now that I'm still quite aware of my body and stomach even; it's just that the pain is no longer there. Now, I don't and wouldn't ever use it as a cramping remedy, but I take some comfort in knowing that if I am cramping and want to smoke DMT, that it will probably do the trick.
In Tony Wright's book "Left in the Dark" he speculates that while the dominant left brain typically holds control over the digestive tract, that if the left hemisphere is suppressed so that the right can temporarily assert dominance, that it can operate the digestive system as well, if not more efficiently. It seems to me that DMT brings out a lot of right brain processes (visual symbols, unity, emotions...) while suppressing left brain processes (the ego and its extensive constructs), and perhaps because of this, the digestive tract is able to operate at a much more optimal efficiency, thus reducing cramping and intestinal pain. Perhaps this is also why DMT will work so readily at healing gut pain, while it may not be as reliable at negating other kinds of pain.