My children not only have food allergies, but they are also sensitive to so many foods including additives and dyes. Their symptoms include irritability, over-emotional reactions, fatigue, and diarrhea. The foods they are sensitive to do not show up as an allergy on an IgE test. Many of the kids that I work with also have the same problem, but because they have developmental delays it is harder for them to tell us they have a tummy ache or we just blow off their tantrums as part of the developmental delay. The truth is that many of the processed foods, additives, and chemicals that are a part of our diet aren't good for any of us. I try my best to buy organic foods as well as natural products without trans-fats, dyes, yeast, and other additives; but to say that it is easy to do this would be a lie. It does mean that I spend a lot of time reading labels and investigating products on the internet before I go shopping. One website that has provided me with some great information is Feingold:
Since 75% of our immune system is in our gastro-intestinal tract it makes since to treat it right and eat natural products without all of those additives!