The more religious a person is, the more likely they are to suffer from Hippocampal Atrophy. I guess a lifetime of cognitive dissonance can really take its toll.
http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0017006#pone-0017006-t002
( Early symptoms of hippocampal atrophy can include difficulty recalling the recent past and disorientation. It may also be marked by a difficulty in performing spacial navigation, which generally equates to a tendency to get lost, even in familiar environments.)