From 2004 to 2012, Japanese officials spent about $4 million dollars studying the physiological and psychological effects of forest bathing, designating 48 therapy trails based on the results. In one very small (and thus limited) but interesting study, Qing Li, a professor at Nippon Medical School in Tokyo, measured the activity of human natural killer (NK) cells in 12 men’s immune systems before and after exposure to the woods. These cells provide rapid responses to viral-infected cells and tumors, and are associated with immune system health and cancer prevention. In a 2009 study, Li’s subjects showed significant increases in NK cell activity in the week after a forest visit, and positive effects lasted a month following each weekend in the woods.[...]
That said, there are plenty of ways to take your nature medicine. Blue mind science is the study of water’s curative properties, and studies have shown that both a trip to the ocean and a shower at home prove soothing. A visit to the park is also restorative, as is walking barefoot and earthing—which is basically just connecting to the ground.
Even just digging your fingers in the soil of a potted plant can improve your mood and boost your immune system. It turns out that, like trees, dirt has properties that are good for human health. Soil has a microbiome and the more we contact it, the more we let it infiltrate our systems, the better our chances of maintaining physical and mental wellness.
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