Impact of bedroom light exposure on glucose metabolic markers and the role of circadian-dependent meal timing: A population-based cross-sectional study
Background: Light at night (LAN) has become a global concern. However, little is known about the effects of bedroom LAN exposure on glucose metabolism markers. We aimed to explore the association between intensity and duration of bedroom LAN exposure with glucose metabolism markers, and the role of...
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Elsevier
2025-01-01
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| Series: | Ecotoxicology and Environmental Safety |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0147651324016658 |
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| author | Qi Li Yu-xiang Xu Xiu-zhen Lu Yu-ting Shen Yu-hui Wan Pu-yu Su Fang-biao Tao Xin Chen Ying Sun |
| author_facet | Qi Li Yu-xiang Xu Xiu-zhen Lu Yu-ting Shen Yu-hui Wan Pu-yu Su Fang-biao Tao Xin Chen Ying Sun |
| author_sort | Qi Li |
| collection | DOAJ |
| description | Background: Light at night (LAN) has become a global concern. However, little is known about the effects of bedroom LAN exposure on glucose metabolism markers. We aimed to explore the association between intensity and duration of bedroom LAN exposure with glucose metabolism markers, and the role of circadian-dependent meal timing in these associations. Methods: Real-ambient bedroom LAN exposure was measured using a portable illuminance meter for two consecutive days. Seven consecutive days of sleep time and 24-h dietary records were assessed by wrist-worn accelerometer and mobile phone photos, respectively. Circadian-dependent meal timing, including the timing of meal relative to clock time and sleep time, was calculated from 24-h dietary records and sleep data. Results: The mean age of participants was 18.7 years, and 32.8 % were male. Per SD lx increase of bedroom LANavg was associated with 1.75 μU/mL-increase in INS (95 %CI: 0.10, 2.50), 0.61 unit-increase in HOMA-IR (95 %CI: 0.43, 0.79), and 0.09 unit-increase in TyG (95 %CI: 0.04, 0.15); per SD min increase of bedroom LAN3 was associated with 1.61 μU/mL-increase in INS (95 %CI: 0.84, 2.37), 0.48 unit-increase in HOMA-IR (95 %CI: 0.29, 0.67), and 0.07 unit-increase in TyG (95 %CI: 0.01, 0.13). Nevertheless, these associations were found to be significant in later circadian-dependent meal timing group while weaker or not significant in earlier circadian-dependent meal timing group (time of first meal ≤ 9:00, time of last meal ≤ 19:00, first meal - sleep end ≤ 2 h, and sleep onset - last meal ≥ 5 h). Conclusions: Overall, bedroom LAN exposure was associated with impaired glucose metabolism markers among young adults. Importantly, circadian-dependent meal timing may have potentially moderate effects on these associations. Keeping bedroom darkness at night and adhering to early eating pattern may be important public health strategies to reduce the risk of glucose metabolism disorders. |
| format | Article |
| id | doaj-art-1f4275e25b5f4e36a9603f355f9e507d |
| institution | Kabale University |
| issn | 0147-6513 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
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| series | Ecotoxicology and Environmental Safety |
| spelling | doaj-art-1f4275e25b5f4e36a9603f355f9e507d2025-02-12T05:29:54ZengElsevierEcotoxicology and Environmental Safety0147-65132025-01-01290117589Impact of bedroom light exposure on glucose metabolic markers and the role of circadian-dependent meal timing: A population-based cross-sectional studyQi Li0Yu-xiang Xu1Xiu-zhen Lu2Yu-ting Shen3Yu-hui Wan4Pu-yu Su5Fang-biao Tao6Xin Chen7Ying Sun8Anhui Provincial Key Laboratory of Environment and Population Health across the Life Course, Anhui Medical University, Hefei, China; MOE Key Laboratory of Population Health Across Life Cycle, Hefei, China; Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui Medical University, Hefei, ChinaAnhui Provincial Key Laboratory of Environment and Population Health across the Life Course, Anhui Medical University, Hefei, China; MOE Key Laboratory of Population Health Across Life Cycle, Hefei, China; Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui Medical University, Hefei, ChinaKey Laboratory of Oral Diseases Research of Anhui Province, Stomatologic Hospital & College, Anhui Medical University, Hefei, Anhui, ChinaAnhui Provincial Key Laboratory of Environment and Population Health across the Life Course, Anhui Medical University, Hefei, China; MOE Key Laboratory of Population Health Across Life Cycle, Hefei, China; Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui Medical University, Hefei, ChinaAnhui Provincial Key Laboratory of Environment and Population Health across the Life Course, Anhui Medical University, Hefei, China; MOE Key Laboratory of Population Health Across Life Cycle, Hefei, China; Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui Medical University, Hefei, ChinaAnhui Provincial Key Laboratory of Environment and Population Health across the Life Course, Anhui Medical University, Hefei, China; MOE Key Laboratory of Population Health Across Life Cycle, Hefei, China; Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui Medical University, Hefei, ChinaAnhui Provincial Key Laboratory of Environment and Population Health across the Life Course, Anhui Medical University, Hefei, China; MOE Key Laboratory of Population Health Across Life Cycle, Hefei, China; Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui Medical University, Hefei, ChinaKey Laboratory of Oral Diseases Research of Anhui Province, Stomatologic Hospital & College, Anhui Medical University, Hefei, Anhui, China; Correspondence to: Anhui Medical University, No 81 Meishan Road, Hefei, Anhui 230032, China.Anhui Provincial Key Laboratory of Environment and Population Health across the Life Course, Anhui Medical University, Hefei, China; MOE Key Laboratory of Population Health Across Life Cycle, Hefei, China; Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui Medical University, Hefei, China; Key Laboratory of Oral Diseases Research of Anhui Province, Stomatologic Hospital & College, Anhui Medical University, Hefei, Anhui, China; Center for Big Data and Population Health of IHM, Anhui Medical University, Hefei, China; Correspondence to: Anhui Medical University, No 81 Meishan Road, Hefei, Anhui 230032, China.Background: Light at night (LAN) has become a global concern. However, little is known about the effects of bedroom LAN exposure on glucose metabolism markers. We aimed to explore the association between intensity and duration of bedroom LAN exposure with glucose metabolism markers, and the role of circadian-dependent meal timing in these associations. Methods: Real-ambient bedroom LAN exposure was measured using a portable illuminance meter for two consecutive days. Seven consecutive days of sleep time and 24-h dietary records were assessed by wrist-worn accelerometer and mobile phone photos, respectively. Circadian-dependent meal timing, including the timing of meal relative to clock time and sleep time, was calculated from 24-h dietary records and sleep data. Results: The mean age of participants was 18.7 years, and 32.8 % were male. Per SD lx increase of bedroom LANavg was associated with 1.75 μU/mL-increase in INS (95 %CI: 0.10, 2.50), 0.61 unit-increase in HOMA-IR (95 %CI: 0.43, 0.79), and 0.09 unit-increase in TyG (95 %CI: 0.04, 0.15); per SD min increase of bedroom LAN3 was associated with 1.61 μU/mL-increase in INS (95 %CI: 0.84, 2.37), 0.48 unit-increase in HOMA-IR (95 %CI: 0.29, 0.67), and 0.07 unit-increase in TyG (95 %CI: 0.01, 0.13). Nevertheless, these associations were found to be significant in later circadian-dependent meal timing group while weaker or not significant in earlier circadian-dependent meal timing group (time of first meal ≤ 9:00, time of last meal ≤ 19:00, first meal - sleep end ≤ 2 h, and sleep onset - last meal ≥ 5 h). Conclusions: Overall, bedroom LAN exposure was associated with impaired glucose metabolism markers among young adults. Importantly, circadian-dependent meal timing may have potentially moderate effects on these associations. Keeping bedroom darkness at night and adhering to early eating pattern may be important public health strategies to reduce the risk of glucose metabolism disorders.http://www.sciencedirect.com/science/article/pii/S0147651324016658Light at nightmeal timingglucose metabolism markerscircadianyoung adults |
| spellingShingle | Qi Li Yu-xiang Xu Xiu-zhen Lu Yu-ting Shen Yu-hui Wan Pu-yu Su Fang-biao Tao Xin Chen Ying Sun Impact of bedroom light exposure on glucose metabolic markers and the role of circadian-dependent meal timing: A population-based cross-sectional study Ecotoxicology and Environmental Safety Light at night meal timing glucose metabolism markers circadian young adults |
| title | Impact of bedroom light exposure on glucose metabolic markers and the role of circadian-dependent meal timing: A population-based cross-sectional study |
| title_full | Impact of bedroom light exposure on glucose metabolic markers and the role of circadian-dependent meal timing: A population-based cross-sectional study |
| title_fullStr | Impact of bedroom light exposure on glucose metabolic markers and the role of circadian-dependent meal timing: A population-based cross-sectional study |
| title_full_unstemmed | Impact of bedroom light exposure on glucose metabolic markers and the role of circadian-dependent meal timing: A population-based cross-sectional study |
| title_short | Impact of bedroom light exposure on glucose metabolic markers and the role of circadian-dependent meal timing: A population-based cross-sectional study |
| title_sort | impact of bedroom light exposure on glucose metabolic markers and the role of circadian dependent meal timing a population based cross sectional study |
| topic | Light at night meal timing glucose metabolism markers circadian young adults |
| url | http://www.sciencedirect.com/science/article/pii/S0147651324016658 |
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