@sciencefunn: In some Finnish daycare centers, researchers didn’t just “replace rubber with mud.”. They added natural elements like forest soil, grass, moss and plants. Basically, they turned sterile playgrounds into small “mini-forests.” What they found In one well-known experiment: Kids playing in these nature-rich yards showed changes in their immune system within weeks (even ~28 days). After about a year, they had healthier immune responses and fewer harmful bacteria on their skin. The idea is tied to something called the biodiversity hypothesis - modern environments are too clean, so kids miss out on helpful microbes from nature. 👉 Giving kids regular contact with natural environments (soil, plants, biodiversity) can improve their immune system. We share wholesome science content. Feel free to join us 👉 @sciencefunn for more.

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Wednesday 22 April 2026 17:46:16 GMT