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Title: | A large prospective investigation of outdoor light at night and obesity in the NIH-AARP Diet and Health Study | Authors: | Zhang, D Jones, RR Powell-Wiley, TM Jia, P James, P Xiao, Q |
Issue Date: | 2020 | Source: | Environmental health : a global access science source , 2020, v. 19, 74, p. 1-8 | Abstract: | Background Research has suggested that artificial light at night (LAN) may disrupt circadian rhythms, sleep, and contribute to the development of obesity. However, almost all previous studies are cross-sectional, thus, there is a need for prospective investigations of the association between LAN and obesity risk. The goal of our current study was to examine the association between baseline LAN and the development of obesity over follow-up in a large cohort of American adults. Methods The study included a sample of 239,781 men and women (aged 50-71) from the NIH-AARP Diet and Health Study who were not obese at baseline (1995-1996). We used multiple logistic regression to examine whether LAN at baseline was associated with the odds of developing obesity at follow-up (2004-2006). Outdoor LAN exposure was estimated from satellite imagery and obesity was measured based on self-reported weight and height. Results We found that higher outdoor LAN at baseline was associated with higher odds of developing obesity over 10 years. Compared with the lowest quintile of LAN, the highest quintile was associated with 12% and 19% higher odds of developing obesity at follow-up in men (OR (95% CI) = 1.12 (1.00, 1.250)) and women (1.19 (1.04, 1.36)), respectively. Conclusions Our findings suggest that high LAN exposure could predict a higher risk of developing obesity in middle-to-older aged American adults. |
Keywords: | Light at night Light pollution Obesity Circadian rhythms |
Publisher: | BioMed Central | Journal: | Environmental health : a global access science source | EISSN: | 1476-069X | DOI: | 10.1186/s12940-020-00628-4 | Rights: | © The Author(s). 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data. The following publication Zhang, D., Jones, R. R., Powell-Wiley, T. M., Jia, P., James, P., & Xiao, Q. (2020). A large prospective investigation of outdoor light at night and obesity in the NIH-AARP Diet and Health Study. Environmental Health: A Global Access Science Source , 19, 1-8 is available at https://dx.doi.org/10.1186/s12940-020-00628-4 |
Appears in Collections: | Journal/Magazine Article |
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