EigoPro 準1級 読解 — The Healing Power of Nature

The Japanese coined the term shinrin-yoku, or "forest bathing," in the 1980s to describe the deceptively simple act of spending unhurried time among trees. To Western ears the phrase once sounded like wellness marketing, a soothing label with no substance behind it. Yet over the past two decades a growing body of research has lent the practice an unexpected scientific credibility, suggesting that contact with green space confers measurable benefits on both body and mind. The evidence is striking. Studies report that even brief walks in woodland can lower cortisol, the body's principal stress hormone, while slowing the pulse and reducing blood pressure. Some researchers attribute part of this effect to phytoncides, the airborne compounds that trees emit to defend themselves against insects; inhaling them, the theory goes, stimulates the immune system. Others are more cautious, noting that simply being away from traffic, screens, and the relentless demands of urban life may account for much of the improvement. Whatever the mechanism, the direction of the findings is consistent: people who spend regular time in natural settings tend to report lower anxiety and sharper concentration than those who do not. What makes this research more than a curiosity is its bearing on public health. As cities swell and populations age, the chronic stress and mental fatigue of urban living impose an enormous, if largely invisible, burden. If a stroll through a park can ease that burden at virtually no cost, then green space ceases to be a mere amenity and becomes a form of preventive medicine. Some urban planners have already begun to treat parks and tree-lined streets as infrastructure as essential as roads or hospitals. None of this is to romanticise nature or to suggest that a forest can substitute for proper medical care. The benefits are modest and the studies imperfect, often relying on small samples and self-reported data. But the cumulative weight of the evidence is hard to dismiss, and the prescription it implies is refreshingly accessible: to feel better, sometimes the wisest thing is simply to step outside.

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