Did you know playing in a little dirt can boost Washington kids' health and immunity?

Canva-Getty
Canva-Getty
loading...

Encouraging Kids to Play in the Mud: A Path to Stronger Immunity in Washington State

In a current time where parents are prioritizing cleanliness more and more, the benefits of letting children get muddy may come as a surprise to most people. New research increasingly shows that exposure to dirt and microbes can be crucial for developing a strong and robust immune system in children. Washington State parents might want to rethink their approach to playtime if they keep them out of the dirt because science suggests that playing in the mud could help their kids be more healthy.

Mud is not just a simple mix of soil and water; it is a thriving ecosystem filled with microorganisms. A single gram of soil can contain up to 10 billion microorganisms, made from thousands of different species. This diverse microbial community plays a huge role in what immunologists call “immune training.” This process helps the immune system learn to tell the difference between harmful pathogens and benign environmental substances.

During childhood, the immune system is very adaptable. When kids are exposed to various microbes, they develop a balanced response, combating harmful invaders but ignoring harmless substances like pollen or food particles. The study shows the lack of exposure to playing in soil or mud can leave children vulnerable. According to the “hygiene hypothesis,” increased urbanization and sanitizing can keep children's immune systems away from the microbial challenges they require to develop, causing to heightened sensitivity. This can cause allergic conditions, like asthma or eczema, increasingly common among children raised in sanitized environments.

Canva-Getty
Canva-Getty
loading...

Children with Less Microbial Exposure are More Likely to Develop Allergies and Autoimmune Diseases

This research shows that children who grow up with less microbial exposure are much more likely to develop allergies and autoimmune diseases. Kids raised on farms or in homes with pets, where kids are exposed to a larger microbial diversity, tend to have stronger immune systems and lower rates of these same conditions.

Also, certain soil bacteria, like Bacteroides fragilis, contribute to healthy immune function, helping in the development of regulatory T cells that control immune responses. These T cells are important for preventing autoimmune reactions, highlighting the importance of microbial exposure even more.

Besides the immune benefits, playing in mud provides sensory experiences that stimulate brain development and improve future emotional resilience. Sensory activities like playing in the dirt and mud can help reduce stress in the future, vital for maintaining a healthy immune system. Surprisingly, there is also a type of soil bacteria that contributes to better health. Mycobacterium vaccae has been shown to actually reduce inflammation or improve mood by influencing serotonin release.

Parents concerned about hygiene should consider practical steps to ensure safe mud play by selecting clean play areas, dressing children in appropriate clothing, and promoting hygiene after play can all help mitigate potential health risks. Encouraging kids to enjoy regular outdoor activities helps them reap the benefits of microbial exposure and enjoy physical activity that supports overall health.

LOOK: Creepy Things That Kept '70s and '80s Kids Up at Night

Growing up in the '70s and '80s, the line between reality and fiction blurred—let’s revisit the movies and moments that kept us up at night (and maybe still do!)

Gallery Credit: Stephen Lenz

More From Washington State News