I've been reading the book White Bread: A Social History of the Store-Bought Loaf by Aaron Bobrow-Strain. I'm only about a quarter of the way in, but so far it has been an informative take on some of the modern food debates seen through the history of white bread. At times it falls into the big-is-bad or anything-for-profit-is-bad trap and often fails to fully appreciate the benefits of lower prices to the poor, but otherwise its an interesting read.
I particularly liked the following passage: