Introduction You might be forgiven for thinking that you are the only person living in your body (Neu, 2011). However, the truth is that millions upon millions of microorganisms teem with life throughout the human body. They are particularly concentrated along the gastrointestinal tract (the human gut that runs from your esophagus down through your stomach and ending at the anus). For the past decade, mounting evidence has suggested that these microorganisms are involved in…