12 Prebiotic Foods You Didn't Know Were Fueling Your Gut's Good Bacteria

5. Jerusalem Artichokes (Sunchokes)

Jerusalem artichokes—also called sunchokes—are knobby roots with a sweet, nutty flavor and a sky-high concentration of inulin, a superstar prebiotic. Inulin acts as a preferred fuel source for Bifidobacteria, one of the most beneficial groups of bacteria in your gut. These bacteria help with immunity, improved digestion, and the absorption of crucial nutrients. Roasting sunchokes brings out their mellow sweetness, but you can also shred them raw into slaws or salads for crunch. If you’re new to sunchokes, start with small servings to let your gut adjust—your beneficial microbes will thank you for this thoughtful boost.

6. Chicory Root

You might recognize chicory root as a coffee substitute, but it’s one of nature’s richest inulin sources. Inulin isn’t just fiber—it directly feeds beneficial bacteria, supports gentle regularity, and even helps the body absorb minerals. Stirring roasted, ground chicory into herbal coffee, smoothies, or baked goods is an easy way to reap these prebiotic perks. Plus, chicory root blends naturally with a wide range of flavors, making it a flexible addition to your wellness routine. With each small step, you’re giving your gut’s “good” bacteria more of what they need to help you feel vibrant at every stage.