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Int. J. Environ. Res. Public Health 2018, 15(1), 78; https://doi.org/10.3390/ijerph15010078

Environmental Risk Factors for Developing Type 2 Diabetes Mellitus: A Systematic Review

1
Population Wellbeing and Environment Research Lab (PowerLab), School of Health and Society, Faculty of Social Sciences, University of Wollongong, Wollongong, NSW 2522, Australia
2
Menzies Centre for Health Policy, University of Sydney, Sydney, NSW 2006, Australia
*
Authors to whom correspondence should be addressed.
Received: 29 November 2017 / Revised: 19 December 2017 / Accepted: 23 December 2017 / Published: 5 January 2018
(This article belongs to the Section Environmental Health)
Full-Text   |   PDF [1012 KB, uploaded 5 January 2018]   |  

Abstract

Different elements of the environment have been posited to influence type 2 diabetes mellitus (T2DM). This systematic review summarizes evidence on the environmental determinants of T2DM identified in four databases. It proposes a theoretical framework illustrating the link between environment and T2DM, and briefly discusses some methodological challenges and potential solutions, and opportunities for future research. Walkability, air pollution, food and physical activity environment and roadways proximity were the most common environmental characteristics studied. Of the more than 200 reported and extracted relationships assessed in 60 studies, 82 showed significant association in the expected direction. In general, higher levels of walkability and green space were associated with lower T2DM risk, while increased levels of noise and air pollution were associated with greater risk. Current evidence is limited in terms of volume and study quality prohibiting causal inferences. However, the evidence suggests that environmental characteristics may influence T2DM prevention, and also provides a reasonable basis for further investigation with better quality data and longitudinal studies with policy-relevant environmental measures. This pursuit of better evidence is critical to support health-orientated urban design and city planning. View Full-Text
Keywords: type 2 diabetes mellitus; environment; walkability; green space; noise; air pollution type 2 diabetes mellitus; environment; walkability; green space; noise; air pollution
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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    Description: 1. Table S1: Key characteristics of studies included in the systematic review 2. PRISMA checklist 3. PRISMA flow diagram
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Dendup, T.; Feng, X.; Clingan, S.; Astell-Burt, T. Environmental Risk Factors for Developing Type 2 Diabetes Mellitus: A Systematic Review. Int. J. Environ. Res. Public Health 2018, 15, 78.

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