We pretty much followed Bruce Semon's diet in the Shaw book and have pretty much stuck with it for our son, Charlie, who is 2 months shy of 4. I can always tell when he gets a bit of something--corn, sweetening--because he gets a rash on his cheeks, bad breath, and some stomach issues. Right now he has nothing fermented (this is in the first stage of Semon's diet, I think), no fruits (except for a few blueberries in his pancakes), no sweeteners at all, no juice, no corn, soy, eggs, no vegetables with heavy pigmentation (we do parsnips, cucumbers, bok choy, nappa cabbage). He is also totally GFCF. I know there's a lot of "no" 's in that list, sorry for any puns. I get some passive annoyance from grandmothers and teachers over my demand to keep Charlie on his strict diet but my husband and I know, KNOW, it has helped him take so many steps, big and little. I figure, he has plenty of time for chocolate (also on the no list) and sweet things in his life--but right now he needs everything he can to help him develop his talking and learning. cheers, Kristina