I've seen people be fine with a radical change of diet for a day or two, then thier body seems to go on strike.
That's a very good point.. Didn't realize the body would do this.. Something to think about..
You simply need to make a conscious effort to use your canned goods.
I think maybe I'll incorporate both IronRaven and HarpersFerry's comments.. I'll look at it from an acclimation point of view. Work in slowly the stored canned foods so that your body can acclimate to the type of food....
Interesting...