WHAT’S UP, DOC? | Gut Feelings: How the Bacteria Inside of You Could be Changing the Way You Think, Feel and Behave

Your body is teeming with bacteria. Recent studies estimate that 39 trillion bacterial cells live in and on the human body, with over 1,000 species living in your gut alone. To put that in perspective, the average human body has only about 30 trillion human cells. But don’t worry — having all that bacteria is a good thing! The bacteria inside of you, also known as your microbiota, are essential to your health.