A gastro-enterologist believes my problem is due to dysfunction of my digestive system, that it doesn't work properly to digest food.   I've succeeded in inducing it to behave properly in short bursts with certain Rx and OTC digestive products, but these have had significant side effects. And haven't provided permanent relief.   At present I am many weeks into a low-residue diet which is benficial to a degree. The diet may be health-negative in the long run, so I hope my GI tract can get