healing power of nature essay with reference pact with the sun
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It sounded more like a lark than a scientific study when a handful of Japanese researchers set out to discover whether something special–and clinically therapeutic–happens when people spend time in nature. They were inspired by a new recommendation from the Forest Agency of Japan, which in the early 1980s began advising people to take strolls in the woods for better health. The practice was called forest bathing, or shinrin-yoku, and it was believed to lower stress–but that hadn’t been proved. Since then, a large body of evidence has shown that spending time in nature is responsible for many measurable beneficial changes in the body.
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In one early study, Yoshifumi Miyazaki, a forest-therapy expert and researcher at Chiba University in Japan, found that people who spent 40 minutes walking in a cedar forest had lower levels of the stress hormone cortisol, which is involved in blood pressure and immune-system function, compared with when they spent 40 minutes walking in a lab. “I was surprised,” Miyazaki recalls. “Spending time in the forest induces a state of physiologic relaxation.”
Another researcher, Dr. Qing Li, a professor at the Nippon Medical School in Tokyo, found that trees and plants emit aromatic compounds called phytoncides that, when inhaled, can spur healthy biological changes in a manner similar to aromatherapy, which has also been studied for its therapeutic benefits. In his studies, Li has shown that when people walk through or stay overnight in forests, they often exhibit changes in the blood that are associated with protection against cancer, better immunity and lower blood pressure.
Recent studies have also linked nature to symptom relief for health issues like heart disease, depression, cancer, anxiety and attention disorders.
“The quiet atmosphere, beautiful scenery, good smells and fresh, clean air in forests all contribute to the effects,” says Li.
1 IT CAN LOWER BLOOD PRESSURE
Spending time outside is good for the heart, research shows, and since high blood pressure costs the U.S. approximately $48.6 billion per year and affects 1 in 3 Americans, visiting green spaces may be a simple and affordable way to improve heart health. A large June 2016 study found that nearly 10% of people with high blood pressure could get their hypertension under control if they spent just 30 minutes or more in a park each week. “If everyone were to make time for nature, the savings on health care costs could be incredible,” says study author Danielle Shanahan, a research fellow at the University of Queensland in Australia.
The fresh air could be one factor, since air pollution has been linked to a higher risk for heart attacks, but since the study participants lived in cities (and therefore were also being exposed to air pollution), that likely isn’t the only driver. Scientists think stress reduction also plays a part. “Nature is undemanding,” says Shanahan. “It requires effortless attention to look at the leaves of a tree, unlike the constant emails at work or the chores at home.”
Trees’ natural fragrance may also play a role, as some studies have shown that phytoncides lower blood pressure by quelling the body’s fight-or-flight response, which stresses the body.
one early study, Yoshifumi Miyazaki, a forest-therapy expert and researcher at Chiba University in Japan, found that people who spent 40 minutes walking in a cedar forest had lower levels of the stress hormone cortisol, which is involved in blood pressure and immune-system function, compared with when they spent 40 minutes walking in a lab. “I was surprised,” Miyazaki recalls. “Spending time in the forest induces a state of physiologic relaxation.”