I found this short article today that makes you think. My uncle has long claimed that manufacturers add something to food to make it addictive, this reporter wrote a book about that very thing. It's a short article, there is a link to his book on Amazon in the article. I know this isn't totally 5:2 related but I feel that 5:2 can help us break some of that addiction.
http://www.counselheal.com/articles/4396/20130317/hooked-sugar-salt-fat-one-book-reveals-big-companies-addicted.htm
http://www.counselheal.com/articles/4396/20130317/hooked-sugar-salt-fat-one-book-reveals-big-companies-addicted.htm