I've seen some studies where they have found the disease may spread to the brain and negatively affect thinking. Some patients have denied that the physician knows enough to affect the prognosis.
*snort* That's a good one.....
Look, they came by this "bug" of their own free will; no part of it was or ever could have been ordained of God. And by gum, they'll fight this in their own strength, knowing full well that if they "Let go and let God" it will all work out just fine.