There is a connection. One of the many possibly causes of IBS is stress and anxiety, and as emets, we have alot of that.
Sage, correct me If I'm wrong about this but I think the theory goes something like this.. we have something in our body called the fight/flight responce. It is a protective mechanism of your body. In a dangerous situation, you may need to reserve your body energy in case you need to get away from that situation, and that basically stops the unnecessary functions in your body, such as digestion. This can cause GI upset.
In emets, our little panic sets of an alarm that can trigger this responce even when its not necessary for the body to do this. Hence the wonderful IBS.
~*Jill*~ Teacher, Advanced BSc in Psychology
"You can unlock any door as long as you have the right key". Mrs. Brisby, Secret of Nimh