Light at night and cause-specific mortality risk in Mainland China: a nationwide observational study
Abstract Background While epidemiological studies have found correlations between light at night (LAN) and health effects, none has so far investigated the impacts of LAN on population mortality yet. We aimed to estimate the relative risk for mortality from exposure to LAN in Mainland China. Methods...
| Main Authors: | , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
BMC
2023-03-01
|
| Series: | BMC Medicine |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s12916-023-02822-w |
| _version_ | 1827983869336354816 |
|---|---|
| author | Yao Lu Peng Yin Jie Wang Yiping Yang Fei Li Hong Yuan Shenxin Li Zheng Long Maigeng Zhou |
| author_facet | Yao Lu Peng Yin Jie Wang Yiping Yang Fei Li Hong Yuan Shenxin Li Zheng Long Maigeng Zhou |
| author_sort | Yao Lu |
| collection | DOAJ |
| description | Abstract Background While epidemiological studies have found correlations between light at night (LAN) and health effects, none has so far investigated the impacts of LAN on population mortality yet. We aimed to estimate the relative risk for mortality from exposure to LAN in Mainland China. Methods This time-stratified case-crossover nationwide study used NPP-VIIRS to obtain daily LAN data of Mainland China between 2015 and 2019. The daily mortality data were obtained from the Disease Surveillance Point System in China. Conditional Poisson regression models were applied to examine the relative risk (RR) for mortality along daily LAN in each county, then meta-analysis was performed to combine the county-specific estimates at the national or regional level. Results A total of 579 counties with an average daily LAN of 4.39 (range: 1.02–35.46) were included in the main analysis. The overall RRs per 100 nW/cm2/sr increases in daily LAN were 1.08 (95%CI: 1.05–1.11) for all-cause mortality and 1.08 (95%CI: 1.05–1.11) for natural-cause mortality. A positive association between LAN and all natural cause-specific mortality was observed, of which the strongest effect was observed on mortality caused by neuron system disease (RR = 1.32, 95%CI: 1.14–1.52). The results were robust in both younger and old, as well as in males and females. The more pronounced effect of LAN was observed in median LAN-level regions. Combined with an exposure–response curve, our study suggests a non-linear association between LAN and mortality in China. Conclusions Our study shows LAN is associated with mortality in China, particularly for neuron system disease-related mortality. These findings have important implications for public health policy establishment to minimize the health consequences of light pollution. |
| first_indexed | 2024-04-09T22:52:58Z |
| format | Article |
| id | doaj.art-8aa839486454415bb72c4ccfee3fbd65 |
| institution | Directory Open Access Journal |
| issn | 1741-7015 |
| language | English |
| last_indexed | 2024-04-09T22:52:58Z |
| publishDate | 2023-03-01 |
| publisher | BMC |
| record_format | Article |
| series | BMC Medicine |
| spelling | doaj.art-8aa839486454415bb72c4ccfee3fbd652023-03-22T11:32:42ZengBMCBMC Medicine1741-70152023-03-0121111110.1186/s12916-023-02822-wLight at night and cause-specific mortality risk in Mainland China: a nationwide observational studyYao Lu0Peng Yin1Jie Wang2Yiping Yang3Fei Li4Hong Yuan5Shenxin Li6Zheng Long7Maigeng Zhou8Clinical Research Center, the Third Xiangya Hospital, Central South UniversityNational Center for Chronic and Noncommunicable Disease Control and Prevention, Chinese Center for Disease Control and PreventionDepartment of Cardiology, The Third Xiangya Hospital, Central South UniversityClinical Research Center, the Third Xiangya Hospital, Central South UniversityDepartment of Cardiology, The Third Xiangya Hospital, Central South UniversityClinical Research Center, the Third Xiangya Hospital, Central South UniversityDepartment of Surveying and Remote Sensing Science, School of Geosciences and Info-Physics, Central South UniversityNational Center for Chronic and Noncommunicable Disease Control and Prevention, Chinese Center for Disease Control and PreventionNational Center for Chronic and Noncommunicable Disease Control and Prevention, Chinese Center for Disease Control and PreventionAbstract Background While epidemiological studies have found correlations between light at night (LAN) and health effects, none has so far investigated the impacts of LAN on population mortality yet. We aimed to estimate the relative risk for mortality from exposure to LAN in Mainland China. Methods This time-stratified case-crossover nationwide study used NPP-VIIRS to obtain daily LAN data of Mainland China between 2015 and 2019. The daily mortality data were obtained from the Disease Surveillance Point System in China. Conditional Poisson regression models were applied to examine the relative risk (RR) for mortality along daily LAN in each county, then meta-analysis was performed to combine the county-specific estimates at the national or regional level. Results A total of 579 counties with an average daily LAN of 4.39 (range: 1.02–35.46) were included in the main analysis. The overall RRs per 100 nW/cm2/sr increases in daily LAN were 1.08 (95%CI: 1.05–1.11) for all-cause mortality and 1.08 (95%CI: 1.05–1.11) for natural-cause mortality. A positive association between LAN and all natural cause-specific mortality was observed, of which the strongest effect was observed on mortality caused by neuron system disease (RR = 1.32, 95%CI: 1.14–1.52). The results were robust in both younger and old, as well as in males and females. The more pronounced effect of LAN was observed in median LAN-level regions. Combined with an exposure–response curve, our study suggests a non-linear association between LAN and mortality in China. Conclusions Our study shows LAN is associated with mortality in China, particularly for neuron system disease-related mortality. These findings have important implications for public health policy establishment to minimize the health consequences of light pollution.https://doi.org/10.1186/s12916-023-02822-wLight at nightMortalityCause-specific mortalityNationwide studyTime-stratified case-crossover study |
| spellingShingle | Yao Lu Peng Yin Jie Wang Yiping Yang Fei Li Hong Yuan Shenxin Li Zheng Long Maigeng Zhou Light at night and cause-specific mortality risk in Mainland China: a nationwide observational study BMC Medicine Light at night Mortality Cause-specific mortality Nationwide study Time-stratified case-crossover study |
| title | Light at night and cause-specific mortality risk in Mainland China: a nationwide observational study |
| title_full | Light at night and cause-specific mortality risk in Mainland China: a nationwide observational study |
| title_fullStr | Light at night and cause-specific mortality risk in Mainland China: a nationwide observational study |
| title_full_unstemmed | Light at night and cause-specific mortality risk in Mainland China: a nationwide observational study |
| title_short | Light at night and cause-specific mortality risk in Mainland China: a nationwide observational study |
| title_sort | light at night and cause specific mortality risk in mainland china a nationwide observational study |
| topic | Light at night Mortality Cause-specific mortality Nationwide study Time-stratified case-crossover study |
| url | https://doi.org/10.1186/s12916-023-02822-w |
| work_keys_str_mv | AT yaolu lightatnightandcausespecificmortalityriskinmainlandchinaanationwideobservationalstudy AT pengyin lightatnightandcausespecificmortalityriskinmainlandchinaanationwideobservationalstudy AT jiewang lightatnightandcausespecificmortalityriskinmainlandchinaanationwideobservationalstudy AT yipingyang lightatnightandcausespecificmortalityriskinmainlandchinaanationwideobservationalstudy AT feili lightatnightandcausespecificmortalityriskinmainlandchinaanationwideobservationalstudy AT hongyuan lightatnightandcausespecificmortalityriskinmainlandchinaanationwideobservationalstudy AT shenxinli lightatnightandcausespecificmortalityriskinmainlandchinaanationwideobservationalstudy AT zhenglong lightatnightandcausespecificmortalityriskinmainlandchinaanationwideobservationalstudy AT maigengzhou lightatnightandcausespecificmortalityriskinmainlandchinaanationwideobservationalstudy |