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Probiotics vs. Prebiotics: Are You Wasting Money on Supplements When Food Could Be The Answer?

In the wellness world, gut health has taken centre stage, and for good reason. A healthy gut microbiome is linked to everything from better digestion and improved immunity to enhanced mood and mental health. Yet when it comes to nurturing this vital system, people are lead to believe that popping an "Inner Health" pill or chugging a Yakult is going to be enough. There's a huge industry around probiotics, which fills the pockets of supplement companies, but are probiotics worth the money, and if not, what should we do instead? Well, there's one cheap and simple solution that is often overlooked when it comes to its potential to improve gut health and the microbiome: Pre-biotics. Let's dive into why prebiotics might be your gut's best friend and how you can use them to diversify and improve your microbiome naturally.

Understanding Probiotics and Prebiotics

Probiotics are live beneficial bacteria that you can consume through supplements or fermented foods like yogurt, kefir, and sauerkraut. They are designed to introduce new strains of good bacteria into your gut, potentially aiding in various health conditions and improving overall gut flora.

Prebiotics, on the other hand, are non-digestible fibres found in many plant-based foods. These fibres serve as food for the beneficial bacteria already residing in your gut, helping them to grow and thrive. Foods rich in prebiotics include garlic, onions, leeks, asparagus, bananas, oats, and apples.

The Case for Prebiotics: Feeding the Good Guys

1. Sustainable Growth: Prebiotics promote the growth of existing beneficial bacteria in your gut. By feeding these bacteria, you support a thriving and diverse microbiome that can adapt and flourish over time. Unlike some probiotics that may not permanently colonise the gut, prebiotics ensure that the good bacteria you already have are well-nourished and active. You can even selectively improve the levels of certain bacteria just by eating their preferred food!

2. Natural and Nutrient-Rich: Prebiotic foods are not just feeding your gut bacteria; they're also feeding you. These foods are packed with essential nutrients, vitamins, and minerals that contribute to overall health. For example, apples contain pectin, a type of prebiotic fibre, along with vitamin C and antioxidants. Prebiotic foods are usually high in soluble and/or insoluble fibre, which is important for detoxification, blood sugar control and keeping you regular.

3. Cost-Effective: Probiotic supplements can be expensive, and the costs can add up over time. In contrast, prebiotic-rich foods are often much more affordable and accessible. Incorporating a variety of fruits, vegetables, and whole grains into your diet can provide long-lasting benefits without breaking the bank. Also, in contrast to supplements, probiotic foods such as yoghurt, sauerkraut, kimchi and miso can be an affordable and delicious way to enhance gut diversity. The natural matrix of food can protect probiotic bacteria and enhance their survival through the digestive tract.

The Limitations of Probiotic Supplements

1. Survivability: Many probiotic bacteria struggle to survive the journey through the harsh, acidic environment of the stomach. Even with advanced delivery methods, not all probiotics will reach the gut alive, potentially reducing their effectiveness.

2. Temporary Colonisation: Probiotic bacteria introduced through supplements may not permanently take up residence in your gut. This means you have to continuously take the supplements to maintain their benefits, leading to ongoing costs.

3. Strain-Specific Benefits: The benefits of probiotics are often strain-specific, meaning that not all probiotics will work for all health conditions. Without proper guidance, you might end up taking a strain that doesn't address your specific needs, and so is a waste of time and money.

Probiotics can help restore gut microbiome balance after disruptions such as antibiotic use or gastrointestinal infections, however, they may not significantly alter the overall diversity of the gut microbiome in healthy people.

How to Optimise Your Gut Health Naturally

1. Diversify Your Diet: Incorporate a wide range of prebiotic-rich foods into your meals. Aim for a colourful plate with various fruits, vegetables, whole grains, nuts, and seeds. This not only provides diverse fibres to feed different beneficial bacteria but also ensures a broad spectrum of nutrients.

2. Fermented Foods: While prebiotics are crucial, don't completely disregard fermented foods. Natural sources of probiotics like yogurt, kimchi, and kefir can complement your prebiotic intake, providing a holistic approach to gut health.

3. Gradual Increase: If you're not used to high-fibre foods, increase your intake gradually to allow your digestive system to adjust. This can help prevent any initial digestive discomfort.

4. Stay Hydrated: Adequate hydration is essential for the proper functioning of dietary fibres and overall digestive health.


While probiotics have their place, especially for targeted therapeutic uses, prebiotics offer a sustainable, natural, and cost-effective way to enhance and diversify your gut microbiome. By focusing on a diet rich in prebiotic foods, you can support the beneficial bacteria already thriving in your gut, leading to long-term health benefits. So before you reach for that expensive probiotic supplement, consider heading to the grocery store and stocking up on prebiotic powerhouses like garlic, onions, and oats. Your gut (and your wallet) will thank you!

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