A recent study from Cornell University links the pleasure of nature to a particular biological condition called inflammation.
The results of the study demonstrated an independent relationship between reduced levels of three distinct inflammatory markers in the bloodstream and increased frequency of good interactions with nature.
"By focusing on these inflammation markers, the study provides a biological explanation for why nature might improve health," said Anthony Ong, professor of psychology, "particularly showing how it might prevent or manage diseases linked to chronic inflammation, like heart disease and diabetes."
For their study, the team used the second wave of the Midlife in the US (MIDUS) survey, a longitudinal study of health and aging in the United States. Ong's analyses focused on a subset of individuals - 1,244 participants, 57 per cent women, with a mean age of 54.5.
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The participants were asked how often they experienced being out in nature, as well as how much enjoyment they got from it. Even when controlling for other variables such as demographics, health behaviours, medication and general well-being, Ong said his team found that reduced levels of inflammation were consistently associated with more frequent positive contact with nature.
"It's a pretty robust finding," Ong said. "And it's this sort of nexus of exposure and experience: It's only when you have both, when you are engaging and taking the enjoyment out of it, that you see these benefits."
"It's good to remind ourselves that it's not just the quantity of nature," he said, "it's also the quality."
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Concentrations of three biomarkers for inflammation – interleukin-6 (IL-6), a cytokine closely involved in the regulation of systemic inflammatory processes; C-reactive protein, which is synthesised in response to stimulation by IL-6 and other cytokines; and fibrinogen, a soluble protein present in blood plasma – were measured, and structural equation modelling was conducted to detect the association between nature engagement and the three biomarkers. Even when controlling for other variables such as demographics, health behaviours, medication and general wellbeing, Ong said his team found that reduced levels of inflammation were consistently associated with more frequent positive contact with nature.
(ANI)
