I don't feel bad when I eat them, no cramps, no stomach upsets, just serious diarrhea. Sounds similar to what Primal123 says. Sorry if this is TMI, but it's obviously going through me without much change, so yeah, I'm not getting anything from it.
I am intolerant to grains and had so many things clear up from cutting them from my diet, but didn't do that til my 40's. I grew up with lots of pasta with my Italian grandmother, lots of wonder bread and cookies and a mother who totally bought into the "meat is bad, grains are good" diet advice. I also have a mild heart defect so whenever strep throat went around as a kid or I had dental work done I was put on prophylactic antibiotics. I'm sure I've got some gut issues still going on. It does seem to be mostly greens, though at times I've suspected other things.
Just to clarify, I did have a lot of antibiotics, but other members of my family have gluten intolerance too, so it's two separate issues. Lucky me
I've made my own sauerkraut and liked it but got out of the habit. Whenever I tried store bought probiotics it really messed me up. Major painful gas, not sure what the heck was going on there. Home made fermented foods don't bother me though. Is that something I should eat daily?
Not sure about oxalates, I don't know anything about that. I'll look into that.