PubMed · 2026-04-21
A scientific review argues that playgrounds rich in diverse, living soil function as 'microbial interfaces' — places where environmental microbes actively shape children's immune and hormonal development. The authors call for a multi-omic research approach to better understand these interactions and to guide the design of urban green spaces that simultaneously benefit child health and ecosystem health.
Reduced exposure to environmental biodiversity and soil microbes is associated with negative health outcomes in children, including disrupted immune and endocrine function.
Playgrounds can act as 'living interfaces' where soil microbiomes influence children's microbial colonization patterns, brain development, cognition, and stress-related disorders.
Many common environmental pollutants — which playgrounds may help mitigate through healthy soil microbiomes — are known disruptors of immune and endocrine function in children, making microbiome-supportive design doubly important.