In Defense of Food - An Eater's Manifesto reads, especially at the end, as an extended version of Food Rules. Really that should be the other way around given that Food Rules came out more recently, but the similarities (as in whole pages copied from one book to another) were apparent.
Not that that should be a bad thing. The underlying message of In Defense of Food is that Food itself, as in natural food, should be the main part of one's diet, and not all this processed, nasty junk. To be honest, I do that anyway, but this is a very interesting account of the state of the food industry in the US and how the government doesn't really do much on behalf of the consumers. Of course if the majority of people in this country were not impulse eaters it would be a different story...
I found myself quoting different examples from this book to friends etc, which is a sign of how good it is. It is definitely a book I will want to lend to my friends. Although if I have friends who think packaged food is the best, I will be very sad.
So. We must stand up in defence of real food and leave behind the Western Diet (read American Diet). And read this book - it really will make you think (and if you are like me, eat more salad).
Sorry this is a crap review, I am just so tired at the moment...