Is it really worth having your gut bacteria tested?

How much can you learn about your health from a dab of poop or a swab from your skin or mouth? With various scientific researchers offering to test your microbiome for a fee, it's natural to be curious about the trillions of microbes living in your body. But is it worthwhile to get tested yourself, and what can… » 1/23/14 11:00am 1/23/14 11:00am