I watched a video the video Hidden Dangers in Kid's Food. It was very informative. It was about genetically modified food. Genetically modified food(GM) is food that has an altered DNA. From what I understood from the video is that GM food is bad, especially for children. When children are exposed to GM food they are more susceptible to toxins, nutritional problems, allergies, and potential problems with milk.
The four major GM food crops are soy, corn, cotton(for cotton seed oil), and canola. In the video they mentioned that the easiest way to stay away from GM food is to stay away from processed food. A lot of processed food is GM.

Here are some links to YouTube where you can watch parts of Hidden Dangers in Kid's Food-
http://www.youtube.com/watch?v=TVH9x4s-5Pc
http://www.youtube.com/watch?v=hdHZl_U0764
http://www.youtube.com/watch?v=nfTnv8tsSzk
I recommend watching this!