Yes CF, Epstien Bar, Hypoglycemia, Panic attacks and the Witness Disease....Depression.
So many of the above comments are spot on in regard to these things being brought on by the "Cult Like" mentality of those who subject themselves too far into the Organization. For some it doesn't take much to bring on these ilnesses whether real or imagined.
What they will tell you from the platform about this is " Jehovah's organization is made up of those who have come out of the world...the "sighing and crying" ones who have been beaten about and bruised by the world. It is only to be expected that there would be a large number of his people suffering such afflictions." These people need to draw close to the Organization...immerse themselves in activity.
The thing they forget is that many of those afflicted were raised in the TRUTH. They forget that Gods word is meant to be a comfort to us and serving him is meant not to be a burden. So what happened?? This constant indoctrination, being responsible for having all the answers and peddling of literature containing the answers (often incorrect) eventually sucks the joy out of life....wears you out until your body demands that you do something about it.