I put this in the category of "it's worth a try but don't expect miracles."

I am concerned about demonizing the parents. I have a kid with multiple severe food allergies. He eats a very healthy diet (meat, grains and fruits/veggies) because almost every processed food has something that he can't have. Normally, we bring all of our own food everywhere. When we go to restaurants, he is allowed to order soda (something that we don't have at home) because he usually can't have anything from the menu. I can't tell you how many dirty looks that I have gotten because my kid is "just having a soda for dinner" when he actually ate before we left the house. Believe me, it gets very tiresome to have well-intentioned people lecture you about what your child should be eating when they don't know the whole story.