Thanks for the links guys. Genetic testing shows that I have a mutation in the VDR taq gene. And I have suffered with IBS for most of my life. Probably time for me to look at this issue again.
The problem with genetic testing and looking at all the methylation related mutations you can have is that there are so many positive and negative interactions between the various mutations. So, if you have multiple mutations like I do, its hard to know what to do. The specific dietary supplementation necessary to "fix" one issue might be contraindicated for one of the other issues.
My issues had kind of settled down for a while, but are acting up a bit again. I was taking a bit of a break from making health research my second job. But, I think its time to try and re-examine my approach to managing my health. But it does get depressing when you find so many potential problems but so few potential solutions.