Evidence map›Paper›PMID 28709033›Full record

ArticleEnvironmental research2017

Vegetated land cover near residence is associated with reduced allostatic load and improved biomarkers of neuroendocrine, metabolic and immune functions.

Andrey I Egorov, Shannon M Griffin, Reagan R Converse, Jennifer N Styles, Elizabeth A Sams, Anthony Wilson, Laura E Jackson, Timothy J Wade

Open access · greenAbstract read
In one paragraph

Article in Environmental research, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 65 papers, 7 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
65citing papers in PubMed, 7 pooled it
6.1field-weighted citation impact, top 3% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

65 citing papers in PubMed, 7 syntheses or guidelines pooled it, 159 citations in OpenAlex.

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  15. Stress, Well-Being, and Reproduction in Wildlife.Advances in experimental medicine and biology · 2026
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5 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors at 4 institutions in 1 country.

Andrey I EgorovNational Health and Environmental Effects Research Laboratory, United States Environmental Protection Agency, Research Triangle Park, NC, USA. Electronic address: egorov.andrey@epa.gov.
Shannon M GriffinNational Exposure Research Laboratory, United States Environmental Protection Agency, Cincinnati, OH, USA.
Reagan R ConverseDepartment of Environmental Sciences and Engineering, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
Jennifer N StylesNational Health and Environmental Effects Research Laboratory, United States Environmental Protection Agency, Research Triangle Park, NC, USA; National Exposure Research Laboratory, United States Environmental Protection Agency, Cincinnati, OH, USA.
Elizabeth A SamsNational Health and Environmental Effects Research Laboratory, United States Environmental Protection Agency, Research Triangle Park, NC, USA.
Anthony WilsonAssociation of Schools and Programs of Public Health fellow at the United States Environmental Protection Agency, Research Triangle Park, NC, USA.
Laura E JacksonNational Health and Environmental Effects Research Laboratory, United States Environmental Protection Agency, Research Triangle Park, NC, USA.
Timothy J WadeNational Health and Environmental Effects Research Laboratory, United States Environmental Protection Agency, Research Triangle Park, NC, USA.
Environmental Protection Agency · USResearch Triangle Park Foundation · USAssociation of Schools and Programs of Public Health · USUniversity of North Carolina at Chapel Hill · US

Funding

Intramural EPA EPA999999
6 · The paper itself

Abstract

backgroundGreater exposure to urban green spaces has been linked to reduced risks of depression, cardiovascular disease, diabetes and premature death. Alleviation of chronic stress is a hypothesized pathway to improved health. Previous studies linked chronic stress with a biomarker-based composite measure of physiological dysregulation known as allostatic load.

objectiveThis study's objective was to assess the relationship between vegetated land cover near residences and allostatic load.

methodsThis cross-sectional population-based study involved 206 adult residents of the Durham-Chapel Hill, North Carolina metropolitan area. Exposure was quantified using high-resolution metrics of trees and herbaceous vegetation within 500m of each residence derived from the U.S. Environmental Protection Agency's EnviroAtlas land cover dataset. Eighteen biomarkers of immune, neuroendocrine, and metabolic functions were measured in serum or saliva samples. Allostatic load was defined as a sum of potentially unhealthy biomarker values dichotomized at 10th or 90th percentile of sample distribution. Regression analysis was conducted using generalized additive models with two-dimensional spline smoothing function of geographic coordinates, weighted measures of vegetated land cover allowing decay of effects with distance, and geographic and demographic covariates.

resultsAn inter-quartile range increase in distance-weighted vegetated land cover was associated with 37% (95% Confidence Limits 46%; 27%) reduced allostatic load; significantly reduced adjusted odds of having low level of norepinephrine, dopamine, and dehydroepiandrosterone, and high level of epinephrine, fibrinogen, vascular cell adhesion molecule-1, and interleukin-8 in serum, and α-amylase in saliva; and reduced odds of previously diagnosed depression.

conclusionsThe observed effects of vegetated land cover on allostatic load and individual biomarkers are consistent with prevention of depression, cardiovascular disease and premature mortality.

Indexed as

AllostasisEnvironmentResidence CharacteristicsAdultAgedAged, 80 and overBasal MetabolismBiomarkersCross-Sectional StudiesFemaleHumansImmune SystemMaleMiddle AgedNeurosecretory SystemsNorth CarolinaBiomarkersAllostatic loadChronic stressDepressionGreen spaceHealth effect biomarkers

Identifiers

PMID28709033
PMCPMC5941947
OpenAlexW2735834093

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.