As often happens in medicine, we take a relatively simple concept and then give it a really intimidating name, so no one knows what the heck we’re talking about! The "microbiome" refers to the bacteria that live in our gut (intestines). There are more bacteria in the gut than cells in the human body! In fact, one could make the case (with tongue only partially in cheek) that the human body is just a vehicle for the care and feeding of bacteria! In all seriousness, what is this microbiome and why should you care about it? The microbiome is established