Imagine if there were an organ in your body that weighed as much as your brain, that affected your memory and mood, your health, weight, and even your behavior. Wouldn’t you want to know about it? There is such an organ — the collection of microbes in and on your body, your human microbiome. Your human microbiome produces molecules decreasing the effects of stress, alters hormones and influences immune functioning affecting behavior, and produces molecules altering brain vessels impacting cognition. This course offers a fascinating glimpse into the mind-gut connection and how keeping your gut healthy keeps your mind healthy.