One of the most overlooked and easy-to-access health remedies is getting outdoors, or as I like to say, taking your Vitamin N(Nature). There are numerous scientific studies, some old and some new, that demonstrate the benefits of spending time out in nature. For a quick summary, you can skim the American Psychological Association’s review of research that documents how nature improves our mental and cognitive health.
Once you become aware of the health benefits of spending time outdoors, people often ask, how much Vitamin N do I need? One study that documented the benefits of time spent in nature showed a reduction in stress by spending as little as 20 minutes outdoors. The participants were asked to stay off their phones and computers while they were outside, in addition, they were also told not to exercise.
The participants swabbed their saliva before and after spending time outdoors to measure the amount of cortisol, or stress hormone, they had in their saliva. The results were fascinating. Being outside was linked to a 21% reduction in cortisol for every hour the participants spent outdoors.
So back to the question: How much time does someone need to spend in nature to get the maximum benefit? I like to refer people to the Nature Pyramid, which was created to incorporate the research about time in nature with the U.S. Department of Health and Human Services recommendations for physical activity.
The pyramid provides a reminder that we should seek a daily dose of nature that can be nearby, like our backyard or a neighborhood park. It goes on to explain that weekly, we should seek out bigger and wilder parks or outdoor locations that are farther removed from noise and traffic.
On a monthly basis, we should seek out even more “restful” natural areas, like state and national parks where there is little human intrusion. The final recommendation is an annual or bi-annual pilgrimage to the wilderness that lasts several days.
I was fortunate to attend a professional conference in Estes Park, CO earlier this month. The location allowed me to spend several days near and in the Rocky Mountain National Park. I can attest to the positive effect such beautiful and natural surroundings had on my heart, soul, and mind. The feelings I experienced from my nature time in CO reminded me of the Henry David Thoreau quote: I took a walk in the woods and came out taller than the trees.
Looking for more resources about nature? Visit go.osu.edu/nature-matters for educational resources, book lists, and more information to get started or keep you going on your nature journey!
Written by: Laura M. Stanton, Family and Consumer Sciences Educator, Ohio State University Extension, Warren County. Email: stanton.60.osu.edu
Reviewed by: Shari Gallup, Assistant Professor and Family and Consumer Sciences Educator, Ohio State University Extension, Licking County. Email: gallup.1@osu.edu
Sources:
American Psychological Association. (2020, April 1). Nurtured by nature. Monitor on Psychology, 51(3). https://www.apa.org/monitor/2020/04/nurtured-nature
Hunter, M.R., Gillespie, B. W., and Chen, S. Y-P. (2019). Urban nature experiences reduce stress in the context of daily life based on salivary biomarkers. Frontiers in Psychology, 10. Article 722. https://doi.org/10.3389/fpsyg.2019.00722
Piercy K. L., Troiano R. P., Ballard R. M., Carlson S. A., Fulton J. E., Galuska D. A., George S. M., and Olson R.D. (2018, November 20). The physical activity guidelines for Americans. Journal of the American Medical Association. 320(19):2020-2028. doi: 10.1001/jama.2018.14854. PMID: 30418471; PMCID: PMC9582631
Shaping How we Invest For Tomorrow (2018). The SHIFT Rx Challenge: Take Your Doctor’s Health Recommendations Outside. https://shiftjh.org/the-shift-rx-challenge-take-your-doctors-health-recommendations-outside
Stanton, L. M. (n.d.). Nature Matters. Ohio State University Extension, Warren County. go.osu.edu/nature-matters
Photo Credit: Colorado by Laura M. Stanton (June 2023).