I'm not too sure as to the reasoning behind WHY there will be an "increase" in suicides amoung Jehovah's Witnesses.
When I was a dub, higher education was for loser, materialistic, worldly minded, weak witnesses. Very few at least in my area ever went to college. One brother did and he viewed as a wordly witness by all others. Today, I see dubs more liberal minded ( at least in my area), as repects to education and better paying jobs. Most of the dubs in my wifes hall do well financially, have there own buisness, are building and selling homes for profit etc.
The last congregation I attended for 16 years in Arizona (wickenburg) I remember of only one suicide....(and if you had to live with the poors guys wife like he did, you'd gas yourself as he did...or go nuts) In my wifes current congregation I personally know of no suicides and we've been here also for 16 years here in California. There may be suicides I didn't know about however.
One thing I will say....I've never seen a sect of people who have the mental anquish witnesses have. Depression is high, many on medication etc., gossiping always high as usual.
Apathy amoung witnesses is very high for those who have been in for a long while as no New System has arrived as promised.
My viewpoint may be way off base as compared to others in various areas, but I told it as I see it here.
Most JW's are "the walking dead", no matter what they say or how they act at the hall. It's just a mask. They are all afraid to speak their doubts since they don't want to be DF'd.