Most of us around here either live in a forest or near one. We are no strangers to nature as some city dwellers might be. We often spend time on a trail. You know the feeling you get when you are out walking slowly in the forest, stopping to admire a wildflower or mushroom that catches your eye? You know it’s good for the mind and body, but why? It turns out that there are more benefits to being out in nature than the calmness it brings.
In the past several decades, there have been many scientific studies that demonstrate the mechanisms behind the healing effects of simply being in natural areas. Many of the benefits from the forest actually come from the air. Trees give off phytoncides, such as alpha-pinene and d-limonene, which are volatile organic compounds or aerosols. These compounds protect the trees and plants from insects and disease, but they also benefit us.
Forest bathing is what the Japanese call it. Shinrin-yoku is their term that means “taking in the forest atmosphere.” Forest therapy has roots in many cultures throughout history. John Muir wrote that “Wilderness is a necessity.” Scientists in Japan are measuring what’s actually happening to our cells and neurons.
Trees give off organic compounds that support our immune systems and help our system fight cancer. Other scientifically proven benefits of forest bathing include reducing blood pressure, accelerating recovery from surgery or illness, improving sleep and our mood and reducing stress. Also being around trees can help alleviate anxiety and depression.
Forest bathing lowers our heart rate and lowers levels of the stress hormone cortisol. Soaking in the forest air increases our NK or natural killer cells by about 50%. One study in Finland found that spending time in nature cut the odds of using blood pressure medications down by 36%. And that’s pretty good.
Other studies have found that something about being in the nature is good for our brains. One study published last year by BioMed Central, a peer reviewed journal sharing research, found that older Americans living in regions with lots of greenery had lower rates of dementia. Another study from the National Library of Medicine found that cognitive decline slowed over a 10-year period for people living in lush spaces.
All I know is that when I am out in the garden or strolling in the forest, I feel good. I stop to watch the progress of a banana slug. I listen for new bird calls. And as a garden designer, I strive to create a space for clients that brings that feeling to them whenever they are outside.
And part of that good feeling we get from being outside has to do with the color green. Green is the color of spring, of growth, renewal and rebirth. It renews and restores depleted energy. It’s a positive color and increases our feelings of relaxation and calmness.
If you don’t have a forest of your own, bring that forest feeling to your own garden. Stroll in a relaxed way without thinking about weeds or pruning or other items on your to-do list. It’s relaxing, calming, rejuvenating and restorative.
Jan Nelson, a landscape designer and California-certified nursery professional, will answer questions about gardening in the Santa Cruz Mountains. Email her at ja******@ao*.com, or visit jannelsonlandscapedesign.com.
