For at least several years, I've been trying to resolve a question that keeps going through my mind. The answer to this question cannot be found in the literature, of course, because these are uncharted waters. Consequently, I don't expect anyone to be able to verify their answer with scientific research - I'm just looking for good, educated opinions. And who would have a better qualified, more knowledgeable opinion, about food-sensitivity issues, than the members of this discussion board?
Here's the question:
Disregarding osteoarthritis, (worn out joints), gout, and trauma, (physical joint injury), is it possible to develop arthritis symptoms from any cause other than food-sensitivities?
I believe that the answer is no. IOW, I believe that food-sensitivities are the cause of all arthritis symptoms, (allowing for the exclusions mentioned above). I have a personal interest in this, because I had major arthritis problems before I adopted the GF diet. Several of my joints were not only stiff, and swollen, but they were also red and obviously inflamed. They hurt all the time, and they were extremely painful to touch. If I accidentally bumped one of them, it could literally bring me to my knees. And I'm not talking about bumping a knee - I'm talking about bumping an inflamed elbow, or finger joint. Anyway, you get the picture - I had arthritis, and it was bad.
It took a while, but the diet resolved all that, and my arthritis disappeared. I still have proof that I once had arthritis, in the form of a couple of crooked, twisted fingers, that were permanently deformed, but once the diet took effect, they stopped changing.
Most of you know that after I had been in remission for a couple of years, I determined that casein, (and various other foods), no longer caused me to have D, bloating, or any other apparent MC symptoms. So, like most undisciplined mortals,



So, I would shrug it off, and gradually fall back into my slovenly habits. I still avoid casein most of the time, but for the better part of a year, now, I usually eat a bowl of ice cream once a week, and some days, I'll eat a candy bar, (usually a Snicker). (I know - absolutely disgusting behavior, but I thought I was getting away with it).
I notice that I occasionally wake up during the night, or in the morning, stiff and sore - sometimes with a backache. It's not osteoarthritis, because the stiffness and pain goes away with exercise, or even just a little flexing. The problem was much worse, when I was taking a statin. Before I quit taking the statin, my fingers would sometimes lockup, and it was impossible to flex them, until I forced them down, with the other hand. Sometimes this would happen with one hand, and a couple of times it happened with both hands, at the same time. After I stopped taking the statin, it took about 6 to 8 weeks for that problem to slowly go away, and it hasn't happened a single time, since then, (I've been off the statin for 7 months, now). Of course, maybe I have some sort of permanent damage from the station, but while statins are known to cause stiffness and muscle damage, I'm not aware that they're associated with arthritis, but apparently this has never been studied.
Maybe it's just my imagination, but one finger joint, (the distal interphalangeal joint of my index finger, on my right hand), seems to be slowly conforming to the distorted shape of the finger beside it, (which was damaged before I adopted the diet). Not only does that joint appear to be growing crooked, but it is also twisting, (like the other finger). It doesn't seem to be inflamed, (no pain), but the joint is somewhat swollen.
All this makes me wonder if casein, (or possibly something else), is causing a low-level redevelopment of my arthritis symptoms. I've already cut out all sources of casein, but the thought just occurred to me that maybe I would be better off if I kept eating it, and ordered an Enterolab test, instead. In fact, maybe I should up the dosage, to make sure that I get a good, decisive, test result.

I never was tested for casein, (nor gluten), because back when I was reacting, I found that I reacted to lactose-free products that contained casein, so I just assumed that I was casein-sensitive, and I cut it out of my diet. I did order a test for soy, eggs, and yeast, and all three of those results were negative.
OK, so after all that long-winded prologue, now you see why I'm curious about the origin of rheumatoid arthritis. Do you have any thoughts on this issue?
Thanks for your time and your insight.
Tex