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I, too, find the issue of diet rotation to be very confusing.  I hate the
thought of limiting my diet any more than necessary.  I don't know how common
it is to develop sensitivities to foods eaten everyday.  But, it seems to me
that vast numbers of people all over the world eat a very limited diet,
pretty much the same thing daily, and I wonder if they have as many problems
in this regard as we do in the US.  I know when I lived on the rez & ate
pretty much the same thing daily I was much healthier than I have been since
I moved to the big city &
got a much more varied (& more refined/processed foods) diet.  Maybe this is
just a coincidence?  Kate in VA