I've been reading Ship Full of Pirates about the Feingold Diet and how beneficial it can be to kids who are "hyper", like I was as a kid, and like Mooky was. Mooky did benefit GREATLY from the Feingold Diet when he was a kid. He would have been even better off if I had known at that time that he was sensitive to gluten as well. This diet has been around a long time, because I was on it as a kid and that was about one hundred years ago, at least. :o)
I saw a link to Taylor's Fuzzy Brained Mice, and thought that was a really good illustration of how food dyes can affect people as well as animals.