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Writer's pictureAnnie Bothma

Fueling For Gut Health: Why Athletes Need Prebiotics Alongside Probiotics

Annie Bothma, Elite Athlete, IOPN Performance Sports Nutritionist (EQF Level 7. Masters), Running & Strength Coach

When it comes to gut health, probiotics often steal the spotlight, but did you know that prebiotics are just as essential? Prebiotics are non-digestible fibers that act as food for probiotics—the “good” bacteria in your gut. While probiotics work to maintain a balanced microbiome, prebiotics help them thrive by providing the nutrients they need. Think of prebiotics as the fuel that powers your gut’s good bacteria, creating a foundation for a healthier digestive system.


In this post, I will dive into why athletes need prebiotics alongside probiotics for a a well-nourished gut can enhance digestion, boost immunity, and improve overall energy levels.



How Prebiotics and Probiotics Work Together

Probiotics and prebiotics are a dynamic duo. While probiotics are live microorganisms that contribute to gut health, prebiotics are fibers that probiotics feed on. This relationship is known as a symbiotic relationship, as both depend on each other to thrive. By consuming prebiotics, you create an environment where probiotics can flourish, which, in turn, promotes a balanced microbiome. A diet rich in both can improve digestion, boost nutrient absorption, and even impact mood and mental clarity through the gut-brain axis.

Essentially, without prebiotics, probiotics wouldn’t have the nourishment they need to work effectively.


Benefits of Prebiotics for Athletes

For athletes, gut health can significantly impact performance. Prebiotics offer several benefits that are particularly valuable for those with high physical demands:


  • Improved Digestion: Prebiotics help maintain a balanced gut flora, reducing the risk of digestive discomfort, bloating, and irregularity—common issues for athletes.


  • Enhanced Nutrient Absorption: By supporting probiotics, prebiotics aid in breaking down food and absorbing nutrients like calcium, magnesium, and iron, which are vital for endurance and recovery.


  • Boosted Immunity: A healthy gut is linked to a stronger immune system, helping athletes ward off illness and recover faster from intense training.


  • Increased Energy Levels: Prebiotics support the gut’s production of short-chain fatty acids (SCFAs), like butyric acid, which provide a source of energy for the body and promote stable blood sugar levels.



Types of Prebiotics

There are several types of prebiotics, each with unique benefits:


  • Inulin: Found in foods like chicory root, bananas, and asparagus, inulin supports calcium absorption and gut health.


  • Resistant Starch: Present in foods like green bananas, oats, and cooked-then-cooled potatoes, resistant starch is especially beneficial for feeding beneficial gut bacteria.


  • Fructooligosaccharides (FOS): Common in garlic, onions, and leeks, FOS can promote the growth of Bifidobacteria, a beneficial gut bacterium.


  • Galactooligosaccharides (GOS): Found in legumes, GOS help maintain a balanced gut microbiome and may reduce bloating.


Ensuring a diverse range of prebiotic types in your diet offers numerous benefits for gut health. Consuming a wide variety of plants in your diet is among the most effective methods to enhance gut health.



Top Food Sources of Prebiotics

Incorporating prebiotic-rich foods into your diet is easy and delicious. Here are some top sources to consider:


  • Bananas – Great in smoothies or as a pre-workout snack

  • Oats – Perfect as overnight oats or a post-workout meal

  • Garlic – Adds flavor to almost any savory dish

  • Onions – A versatile base for cooking

  • Leeks – Great in soups and salads

  • Asparagus – Delicious roasted or steamed

  • Apples – A quick snack that pairs well with nuts

  • Jerusalem Artichokes – Try them roasted for a unique side dish


These foods provide prebiotics that help probiotics flourish, supporting a balanced and healthy gut.



Tips for Combining Prebiotics and Probiotics

To optimize the benefits of prebiotic and probiotic foods, consider combining them. These straightforward combinations can help you incorporate both prebiotics and probiotics into your diet. Here are some simple methods to include both together into a meal or snack:


Overnight Oats with Yogurt

Combine oats with yogurt and refrigerate overnight. Oats are rich in prebiotics, while yogurt provides probiotics—ideal for a balanced, gut-friendly breakfast.


Banana and Kefir Smoothie

Blend a banana with kefir , berries and honey for a creamy smoothie. Bananas contain inulin (a prebiotic), and kefir is a powerful probiotic, making this a great post-workout drink.


Chia Pudding with Yogurt and Berries

Mix chia seeds with milk and refrigerate overnight. Layer with plain yogurt and top with fresh berries in the morning. Chia seeds are a prebiotic fiber source, and yogurt offers probiotics to support gut health.


Avocado Toast with Sauerkraut

Spread avocado on whole-grain toast and top with a spoonful of sauerkraut. Whole-grain bread provides fiber, and sauerkraut is rich in probiotics, making this a satisfying snack or light meal.


Lentil Salad with Pickled Vegetables

Prepare a salad with cooked lentils, and add pickled vegetables like carrots or cucumbers. Lentils contain prebiotic fiber, while pickled veggies offer probiotics for a hearty, gut-supportive meal.


Tempeh and Garlic Stir-Fry

Stir-fry tempeh with garlic and your favorite vegetables. Garlic provides prebiotic benefits, while tempeh is packed with probiotics. This is a flavorful way to enjoy a gut-boosting dinner.



Final Thoughts

Prebiotics and probiotics work hand-in-hand to support a healthy gut microbiome, which is essential for digestion, immunity, and energy. For athletes, this duo can help improve performance, aid recovery, and keep the body resilient to stress and illness. By including both prebiotic-rich and probiotic-rich foods in your daily routine, you’ll be fueling your body with what it needs to perform at its.


If you need guidance on creating a gut-friendly diet tailored to your athletic goals, contact me today at anniesathletes@gmail.com.


 

References

  • Bulsiewicz, Will. Fiber Fueled: The Plant-Based Gut Health Program for Losing Weight, Restoring Your Health, and Optimizing Your Microbiome. Avery, 2020.

  • Hill, Simon. The Proof is in the Plants: How Science Shows a Plant-Based Diet Could Save Your Life (and the Planet). Penguin Life, 2021.

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