I'm a firm believer in the stress connection. My symptoms started in the summer, after losing my job at the end of June. My colleagues (school library technicians/librarians) and I had spent months lobbying against cuts to school funding which threatened the jobs of library staff, educational assistants, administrative assistants, teachers, etc. Over a two-month span we were told a) there would be massive, unspecified job cuts b) all library staff would lose their jobs c) the library cuts might not happen and finally d) about
50% of library staff were losing their jobs. So yeah, just a little bit of stress in my life. Started having problems in July with frequent BMs and gas, then in the fall the full-blown symptoms hit -- just as I was beginning my campaign running for a seat in a municipal election (i.e. more stress). For me it seems that stress can sometimes cause an immediate intestinal reaction: last week I was at my son's first basketball game playing at the junior high level, worrying as I watched him play against boys three years older, 1-2 feet taller and 100+ pounds heavier (he's small for his age) and my abdomen started churning. A couple of times I thought I would have to run for the bathroom but it passed and once the game was over, I was fine.
Another case for the stress-immune system connection: I have had eczema on my hands for years. It would flare up for a few weeks now and then, then subside. In June 2011 when our school board was going through a previous round of budget cuts and I ended up displaced out of my job, and having to displace someone else out of her job, the eczema flared up and it has never, ever cleared up since.
So yes, I'm a believer.
(P.S. for those of you who were counting, yep, that's three times in less than 12 months that I was told, by the same employer, that my job was gone. Gotta love the education system).