Tip # 7 Take Care of Your Gut Health With Probiotics and Fiber The bacteria in your gut, collectively called the gut microbiota, are sometimes referred to as the "forgotten organ." These gut bugs are incredibly important for all sorts of health-related aspects. A disruption in the gut bacteria is linked to some of the world's most serious chronic diseases, including obesity. A good way to improve gut health, is to eat probiotic foods (like live yogurt and sauerkraut), take probiotic supplements, and eat plenty of fiber. Fiber functions as fuel for the gut bacteria.