This is beyond the scope of Feingold however, I think that it's an important fact. We do eat hidden MSG occasionally when we know it's there because it doesn't affect behavior in my kids. However, this article just reiterated the importance of eating real food.
Our taste buds are so used to that lovely MSG "flavor" that makes all food taste so good to our brain that we just don't appreciate good homemade cream of mushroom soup. Chicken broth tastes just plain blah. We need to retrain our brains to love whole foods; the kinds of foods that our Father in Heaven made for us to tend as stewards over this earth.
I encourage you all to start a garden, be it one pot or an acre, indoor or outdoor, and taste some real food this year. If you don't have any space, here's a great website for you. http://www.squarefootgardening.com/ find 2 square feet and some concrete, grass, or dirt, and you're set!