When Joey was very little, we tried out a gluten-free, casein-free diet. We ended up with a very hungry child, especially since his diet wasn't terribly varied to begin with.
Now that he is older, and we are experiencing an increase in behavior issues, I am considering a cut in the gluten again. The thing about cutting gluten is that if I do it right, it can't hurt him; and if he's sensitive, we should see a difference in behavior or mood, or even weight, which would be a signal to us to go more drastic. It isn't like Joey needs to be eating a ton of pasta and bread, anyway.
Our doctor, clever person that she is, made a pretty big deal about wanting the boys to eat lots of fresh foods, especially vegetables, at their last appointment. We are, of course, going to cheat and remind Joey that the doctor's orders are to eat more fresh veggies. He's been very rule-oriented lately, so this may support the effort.
In the meantime, I think I am going to be at the farmer's market more often, because fresh veggies don't keep too well, especially in summer heat. Next week is Andy's "Mythbusters Camp" so a new diet experiment should fit right in!