By: Laci Patterson MA,RD/LD
Over the last few years, Gut health has gotten A LOT of attention, and for good reason. The gut is home to trillions of bacteria that influence not only digestion, but also immune function, inflammation, metabolism, and even mood. Two of the most commonly discussed components of gut health are prebiotics and probiotics. Even though their names sound alike, prebiotics and probiotics do different but equally important jobs to help keep your gut healthy and balanced.
Probiotics are live, beneficial bacteria that help populate the gut with healthy microbes. They are often referred to as the “good” bacteria because of their ability to compete with harmful bacteria and support a well-functioning digestive system. Research shows that probiotics may help with IBS symptoms, keep bowel movements regular, strengthen the immune system, and even support mental health by improving the connection between the gut and the brain.
You can find probiotics in several fermented foods, such as yogurt with live active cultures, kefir, sauerkraut, kimchi, miso, tempeh, and kombucha. It is important to note that not all fermented foods contain live probiotics, so checking the label for “live and active cultures” is recommended.
Prebiotics, on the other hand, are a type of non-digestible fiber that serve as food for the beneficial bacteria already present in the gut. Prebiotics feed the good bacteria in your gut, helping keep things balanced. Eating them regularly can also help your body absorb calcium, keep blood sugar steady, protect your gut lining, and lower inflammation.
Common food sources of prebiotics include garlic, onions, leeks, asparagus, bananas (particularly when slightly green), oats, apples, and chicory root. Many of these foods are already part of a healthy, fiber-rich diet and do not require supplementation.
It’s important to understand that prebiotics and probiotics work best when consumed together. Think of probiotics as seeds and prebiotics as fertilizer. You can plant seeds in your garden, but without nourishing the soil, they won’t thrive. Similarly, taking probiotic supplements or eating fermented foods will be more effective when paired with prebiotic-rich foods that help those bacteria flourish.
Adding both prebiotics and probiotics to your diet can be easy—and they don’t have to be in the same meal! For example, you could start your day with overnight oats (a prebiotic) with banana and chia seeds, cook lunch with garlic (a probiotic-rich food) and onions, and add a little sauerkraut or kimchi (both full of probiotics) to your dinner. Choosing snacks like raw vegetables, apples, or a serving of yogurt with live cultures can also help support a healthy gut.
Maintaining gut health is a foundational step toward improving overall wellness, and it begins with consistent dietary habits. If you’re experiencing symptoms such as bloating, irregular digestion, or discomfort, it may be worth evaluating your intake of pre- and probiotics.