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How Being in Nature Increases Gut Diversity

Have you ever noticed how stepping into nature seems to reset your entire body? The fresh air clears your mind, your body feels lighter, and even your gut seems to settle, as if it's in sync with the calm of your surroundings. There’s something deeply restorative about being outdoors that affects not just how we feel emotionally, but also physically.


One of the lesser-known ways nature benefits us is by enhancing the diversity of the microbes in our gut. These tiny, unseen microorganisms influence many aspects of our well-being, including digestion, immune function, and mental clarity. In fact, the natural world around us is filled with a rich variety of beneficial bacteria that can help restore balance to our internal ecosystem. Reconnecting with nature doesn’t just lift your spirits—it can also strengthen your body in ways you might not expect.

Let’s dive into how the gut microbiota works and why spending more time in nature is crucial for a healthy gut.


What is Gut Microbiota?

The gut microbiota refers to the trillions of microorganisms, including bacteria, fungi, and viruses, that reside in your digestive system. These tiny inhabitants form a complex ecosystem within your intestines and play an important role in keeping you healthy. Often referred to as the "second brain," your gut does far more than just digest food—it influences immune responses, regulates inflammation, and even impacts your mental health.


At the heart of gut health lies diversity. A well-balanced microbiome, filled with a variety of beneficial bacteria, is essential for optimal function. This microbial diversity allows your body to break down food efficiently, absorb nutrients more effectively, and maintain a strong gut lining to defend against harmful invaders.


A diverse microbiota doesn’t just benefit digestion. It’s a key player in your immune system, helping train immune cells to recognise and fight off potential threats like viruses and harmful bacteria. Additionally, these gut bacteria communicate directly with your brain via the gut-brain axis, producing neurotransmitters like serotonin, which regulate mood and stress levels. This means a healthy gut can help support emotional health, cognitive clarity, and stress resilience.


In short, maintaining a thriving and diverse gut microbiota is foundational for the way we feel day-to-day. And as we’ll explore, being in nature can be a powerful tool to naturally boost that diversity.


How Nature Directly Impacts Gut Diversity

Modern lifestyles, especially in urban environments, often limit our exposure to the diverse array of microbes found in natural settings. Spending most of our time indoors and in sanitised environments reduces our contact with beneficial microorganisms, which can lead to a less diverse gut microbiome. This reduction in microbial diversity is linked to various health issues, including digestive problems and weakened immunity.


In contrast, spending time in natural environments introduces us to a richer variety of microbes. Activities like hiking, gardening, and camping expose us to different strains of bacteria and other microorganisms that can positively influence our gut health. For instance, soil is teeming with beneficial microbes like Mycobacterium vaccae, which has been shown to support immune function and reduce stress.


When we engage with the natural world, whether through walking barefoot on the grass or digging in the garden, we interact with these diverse microorganisms. This exposure helps populate our gut with a broader range of beneficial bacteria, promoting a more balanced and healthy microbiome.


Don’t just take my word for it though–research also supports this connection! A study published in Science Advances found that children who spent more time in natural environments had greater microbial diversity in their guts compared to those who spent most of their time indoors. This increased diversity was linked to improved immune responses and overall health. PMID: 33055153


Reconnecting with the natural world, even in small ways, can help restore the microbial diversity that modern life often strips away, leading to a healthier gut and a stronger immune system.

  

Nature, Stress Reduction, and Gut Health

The gut-brain axis refers to the bidirectional communication between our digestive system and central nervous system. Chronic stress negatively affects this connection, leading to elevated cortisol levels, which can disrupt the balance of gut bacteria. Ever noticed how your gut seems to flare up when you’re stressed? This is why! The imbalance of gut bacteria often results in inflammation, digestive issues, and even mood disorders.


Spending time in nature is a powerful way to mitigate stress. Natural environments have been shown to reduce cortisol levels, thereby alleviating stress and creating a more favorable environment for gut health. When cortisol levels decrease, the gut microbiome can recover from stress-induced imbalances, allowing beneficial bacteria to thrive and maintain a diverse ecosystem.


In fact, a study published in Frontiers in Psychology found that just 20-30 minutes in nature significantly reduced cortisol levels and improved mood. PMID: 31019479.


This is great news! Next time you’re feeling overwhelmed, remember that a simple walk in nature could be your ticket to reducing stress and enhancing your gut health.


Practical Tips for Improving Gut Diversity Through Nature

Enhancing your gut diversity doesn’t require a drastic lifestyle overhaul; incorporating more natural experiences into your routine can make a significant difference. Here are some of my best tips to help you reconnect with nature and support your gut health:


1. Spend More Time Outdoors 

Make it a priority to immerse yourself in green spaces regularly. Whether it’s a walk in the park, a weekend hike, or even a few moments of outdoor meditation, being in nature can expose you to a variety of beneficial microbes that contribute to gut diversity. Explore local trails, visit botanical gardens, or simply sit outside and breathe in the fresh air. The goal is to increase your time in environments where you can interact with the natural world and its rich microbial life.


2. Gardening and Outdoor Activities

Gardening is a fantastic way to connect with nature and benefit your gut. When you dig in the soil, you come into contact with a diverse range of microbes, including beneficial bacteria that can support a healthy gut microbiome. Start a small garden, pot some herbs, or even grow indoor plants to engage with the soil and enjoy the microbial benefits. Other outdoor activities, such as picnicking on the grass or playing sports, also offer opportunities for beneficial microbial exposure.


3. Bring Nature Inside

If getting outside frequently isn’t always feasible, you can still bring elements of nature into your home. Adding indoor plants to your living space introduces more natural microbes into your environment. Soil-based probiotics can also help, as they contain beneficial organisms similar to those found in outdoor soil. Additionally, having pets can increase microbial diversity in your home, as they bring in various microbes from their outdoor adventures.


Conclusion

Incorporating more nature into your life can have profound benefits for your gut health. By spending time outdoors, engaging in activities like gardening, and even bringing a touch of nature indoors, you can enhance the diversity of your gut microbiome. This increased microbial variety supports better digestion, strengthens your immune system, and improves mental clarity through the gut-brain axis.


If you’re struggling with gut health issues and need personalised guidance, I’m here to help. Schedule a discovery call with me to explore how I can support your journey towards a healthier, more balanced gut. 



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