My friend is undergoing tests in AZ for a problem he is having in the stomach/intestine area. For over a year he has to use the restroom almost immediately after eating. No matter what he eats he has to go right afterwards and his stool is never solid. He says the only thing that does not do that to him is childrens cereal. He had a barium test to see how long it would take him to digest it. The doctor said an hour is very fast. My friend passed it in 22 minutes. He is losing weight, but in very good heath otherwise. The doctors are being very vague. Any ideas?