Probiotics aren’t the only way to a healthy gut! High-fiber foods like fruits and grains can also stimulate the growth of good bacteria. You’ve heard of probiotics, those good-for-you bacteria that aid digestion and support healthy immune function. Many processed foods like cereal and yogurt are fortified with them. But did you know your body can make probiotics naturally? Prebiotics, indigestible parts of plants (otherwise known as fermentable fiber), stimulate the growth of good bacteria as they move through your intestinal tract. Bananas, berries, whole grains, leafy greens and legumes are all great sources. Because stress, a poor diet, certain medical conditions and some medications can decrease the amount of healthy bacteria in your gut, eating plenty of prebiotics can help maintain equilibrium.