Book excerpt: In Kid Food, nationally recognized food writer Bettina Elias Siegel (New York Times, The Lunch Tray) explores the cultural delusions and industry deceptions that have made it all but impossible to raise a healthy eater in America. Combining first-person reporting with the hard-won understanding of a food advocate and parent, it presents a startling portrayal of the current food landscape for children -- and the role of individual parents in navigating it.