Natural is a wide-ranging and thoughtful exploration of the cultural construction of naturalness as purity. My main interest was in our food systems, but the discussion of contraception was also extremely interesting. I wasn't so interested in the chapter on sports, but that's down to personal interest. Levinovintz' background in religion studies was a fascinating surprise (it shouldn't have been... "faith" is in literally in the subtitle), informing the fallacy of purity that forms the thesis of the book.