This response to eating non-primal foods, including gluten, was temporary for me. I have heard from quite a few other long term primal eaters that it is temporary for them as well.
It seems to last for 6 months to a year or so. I'm not sure if it takes that long for the gut to really heal up or what the deal is. But now I can eat anything in moderation if I chose to. It's not a regular thing, but I really enjoy having a nice piece of homemade cake or a piece of artisan pizza once in a while without having to worry about it.
Using low lectin/nightshade free primal to control autoimmune arthritis. (And lost 50 lbs along the way )
From Scandinavian Journal of Gastroenterology, 2006; 41: 408 Á/419
Gliadin, zonulin and gut permeability: Effects on celiac and non-celiac
"Based on our results, we concluded that gliadin activates zonulin signaling irrespective of the genetic expression of autoimmunity, leading to increased intestinal permeability to macromolecules."
Interpretation....gluten causes leaky gut in everyone.
and of course that is also from here Hey Robb, this person said gluten free diets are bogus!
Even if you accept the premise that we have evolved enough in 10,000 years to handle gluten and gladin, there is no way our bodies could have adapted to the frankenwheat that was produced in the last generation nor is it likely we could handle the extra gluten and gladen that is added to foods everywhere.
Between your studies and the one I posted earlier anyone who continues to eat wheat and processed foods on a regular basis is clearly asking for trouble.
Eating primal is not a diet, it is a way of life.
Don't forget to play!
It may not have anything to do with gluten. I was like that after I didn't eat potatoes for a while. I started eating them and had digestive issues at first, took me a week or 2 before I can handle them again. Same thing with bread, I ate bread my whole life without any troubles (besides some weight gain by passive overconsumption when my metabolism slowed) but then developed a sensitivity to it after not eating it for so long. That's why I use 20% leniency a bit more these days with those types of foods so I have more flexibility and the option to go out and eat anything at restaurants occasionally without any troubles.