Yep, we're looking at that, too. I know that food allergies can leach minerals and vitamins from the body (and even keep you from absorbing them in the first place). My husband has gluten sensitivities; it's possible our youngest has those tendencies as well. Believe me, I know that there are no easy answers. I'm just trying to put the puzzle together one piece at a time. Let's see...can I fit just one more cliche' into this post? -Christine