The problem with some of us that suffer from CIC (Chronic Idiopathic Constipation)--and this is a fairly new theory in the GI world I heard about here on this site--is that some people appear to be born with a condition that causes their body to not correctly process much of the water that they drink with most of the water they drink going directly into the bladder. Some of it's processed correctly or they'd be dead; but with some of us--I really think I have this--nowhere near enough water goes into my intestinal tract (or other places it should), and since not only will fiber not work correctly, it will even be constipating if not enough water makes it into the intestinal tract, the amount of water you drink doesn't make much difference.

It was on here that I read about a doctor telling his patient that unfortunately he'd be constipated until the day he died because he had this condition.