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Research highlights the significant health benefits of soil exposure, suggesting that regular connection with nature can improve physical and mental well-being. This post explores how soil microbes may be important for fostering a resilient microbiome, a strong immune system, and a balanced mind.

“Studies have shown that children raised on farms experience lower rates of conditions like asthma and Crohn’s disease.”

Evidence suggests that childhood exposure to natural environments, particularly soil, plays an important role in shaping immunity and may reduce the risk of chronic diseases. Studies have shown that children raised on farms experience lower rates of conditions like asthma and Crohn’s disease, largely due to regular interactions with diverse soil microbes. This microbial diversity in soil and the anti-inflammatory properties of specific bacteria, such as Mycobacterium vaccae, can positively influence the immune system, reducing inflammation and helping modulate the body’s response to stress. This idea supports the growing understanding of the brain-gut-microbiome system—a complex network connecting the gut, brain, and gut microbiome. Interacting with soil microbes may strengthen this system, supporting the body in handling stress more effectively and enhancing mental resilience.

A study by Roslund and colleagues at the University of Helsinki found that urban children attending daycare centers featuring native forest soil—rather than traditional gravel playgrounds—improved immune response and developed healthier gut and skin bacteria profiles. Interestingly, these health benefits persisted for years, highlighting how even a single environmental intervention can have a lasting impact on the microbiome.

“Regular gardening fosters consistent contact with soil, exposing the body to a range of microbial species, which helps reduce anxiety.”

For adults, outdoor activities like hiking and camping—especially those involving direct contact with soil—provide an opportunity to introduce beneficial microorganisms that support immune resilience. Gardening is one of the most accessible ways to incorporate these benefits into daily life. Regular gardening fosters consistent contact with soil, exposing the body to a range of microbial species, which may contribute to the multiple benefits associated with an enjoyable activity, including a reduction of anxiety and stress reactivity.

Beyond gardening, direct, hands-on experiences with the natural environment can also promote stress relief and mindfulness. Spending time in nature, engaging the senses through touch, smell, and sound, fosters relaxation by creating a buffer from everyday stressors. For those without easy access to nature, community gardens, urban farms, and volunteering for environmental projects bring the benefits of nature and soil to urban settings, supporting health across communities.

“…simply getting in touch with soil could meaningfully support both microbiome health and overall well-being.”

These findings suggest that reconnecting with soil could be a valuable addition to mental and physical health routines. For individuals dealing with chronic stress, anxiety, or immune-related challenges, simply getting in touch with soil could meaningfully support both microbiome health and overall well-being.

This post is based on The New York Times article “The Health Benefits of Getting Dirty” by Holly Burns.