I am currently reading my way through a long list of science fiction and fantasy titles. (http://www.npr.org/2011/08/07/138938145/science-fiction-and-fantasy-finalists if you are interested in the list).
Finally, a book about gut bacteria that may have some practical advice! I've been reading books like this one for years, looking for guidance.
Crossing my fingers that the advice will be useful when I get to it.