According to one study, as many as three-quarters of U.S. teens and adults are deficient in vitamin D, which is obtained naturally from sunshine and some foods, or supplements.
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In “The Nature Principle,” Richard Louv shows how nature can boost mental acuity and creativity; promote health and wellness; help us build smarter, more sustainable businesses, communities and economies; and strengthen human bonds.
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According to a Japanese study, people who gazed on forest scenery for 20 minutes saw a 13% decrease in stress hormone concentration than people in an urban environment.
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