長文読解（人文系・自然科学系の文章）- 問題8

The concept of "forest bathing," known as shinrin-yoku in Japanese, has gained international attention as a scientifically-backed wellness practice. Developed in Japan during the 1980s, this practice involves immersing oneself mindfully in a forest environment to reduce stress and improve overall health. Unlike hiking or other physical activities, forest bathing emphasizes slow, deliberate movement and conscious engagement with nature through all five senses.
Recent scientific studies have revealed the biological mechanisms behind forest bathing's benefits. Trees release chemical compounds called phytoncides, which are natural antimicrobial substances that protect plants from harmful insects and bacteria. When humans inhale these compounds, they experience a boost in immune system function, particularly in the production of natural killer (NK) cells that help fight cancer and viral infections. Additionally, spending time in forests has been shown to lower cortisol levels, reduce blood pressure, and decrease symptoms of anxiety and depression.
The practice has now spread beyond Japan, with forest therapy programs established in countries such as South Korea, Germany, and the United States. Medical professionals increasingly recommend forest bathing as a complementary treatment for various health conditions, recognizing its potential to address the growing mental health crisis in urbanized societies. As cities become more crowded and technology dominates daily life, this ancient wisdom offers a simple yet powerful remedy for modern stress.