(edited due to grave inaccuracies)

I friend of ours asked me about making bread without yeast or wheat.  The rationale is that one of her kids may have ADHD and there are many sources on the internet which suggest that a change in diet may provide an alternative to pharmaceutical treatment.

According to Google, Wikipedia and the remainder of the Sum of human knowledge found on the internet, it *may* be beneficial to eliminate things in the diet that can cause or worsen ADHD.  Some websites cite the Feingold diet and say that (commercial?) yeast can cause some of the same bad reactions that food additives cause.  The Feingold website itself, however, does not mention yeast and wheat specifically.

So does anyone have any experience with this?  Is stone-ground whole wheat less "processed" than white flour and therefore acceptable?   If not, what about spelt sourdough?

Any ideas?