Good hypothesis. I still don't think I'm completely normal, because when I eat a typical American diet I can't function in society, which most people seem to be able to do. (Mainly thinking of a family trip where I ate out a lot and wasn't as careful as usual, and after a couple days I was breaking down crying about once a day, at things that would normally just annoy me.) But then, I could see the more subtle symptoms being things that people assume are chronic problems they can't change. Alternately, my normal is near some kind of borderline for a mental problem and that's why my diet can push it over so easily.

I've also wondered how much of mental illness could be caused by this sort of thing. I was told that as a child, a doctor thought I had ADHD and was about to have me tested, and then my mom forgot to buy bananas at the store one week and my behavior suddenly improve. It seems likely that other children with the same problems I have exist, and most of their parents weren't already alert to diet influences.

Thanks for the app link. I don't have iphone, but I bet I can find something similar for android.

I guess what I should do first is hit up a library database and find out if anyone has already researched this. (I've made a few efforts to look it up before, but mostly just google searches - though I did find that mental symptoms for corn and milk allergies aren't unheard of.) If nutritionists don't think food works this way, but also haven't studied this specifically and found it false, I'm not sure if I should try to do my own experiment or not.