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. 2015 Aug 25;6:1093. doi: 10.3389/fpsyg.2015.01093

FIGURE 2.

FIGURE 2

Enhanced immune function as one possible central pathway. All items in white text are currently known or have been proposed to be causally tied to immune function. As the Figure shows, enhanced immune function can account, at least partially, for each of the specific health outcomes currently tied to nature and may subsume, at least partially, all but two of the other pathways. Other pathways may also contribute the nature-health link, and other central pathways may exist.