Artificial light at night and risk of mental disorders: A systematic review

Tancredi, Stefano; Urbano, T. Guerrero; Filippini, Tommaso

doi:10.1016/j.scitotenv.2022.155185

Cited by 39 publications

(18 citation statements)

References 55 publications

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“…Considering one study noted that decreased sleep quality and shorter duration of sleep may serve as predictive markers of PD development [ 30 ], we hypothesized that increased time spent outdoors reduces the PD risk by improving insomnia. Moreover, increased time spent outdoors was accompanied by reduced levels of exposure to artificial light at night, a risk factor associated with diseases such as depressive disorders and breast cancer [ 31 , 32 ]. Artificial light has also been found to be potentially harmful for dopaminergic neurons and may be a risk factor for PD [ 33 ].…”

Section: Discussionmentioning

confidence: 99%

Association of time spent outdoors with the risk of Parkinson’s disease: a prospective cohort study of 329,359 participants

Hu,

Shi,

Zou

et al. 2024

BMC Neurol

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Background Studies on the association between time spent outdoors and the development of Parkinson’s disease (PD) are lacking, and whether this relationship differs in different subgroups (age, sex) remains unclear. Objective We here examined the association between time spent outdoors and the incidence of PD in different seasons. Methods This study included 329,359 participants from the UK Biobank. Data regarding hours spent outdoors during a typical day were obtained through questionnaires. Cox proportional hazard regression models were used to estimate hazard ratios (HRs) for the association between exposure to outdoors duration and PD incidence. Restricted cubic spline was used to explore the potential nonlinear relationship between time spent outdoors and PD risk. To explore the potential mechanisms of time spent outdoors effecting the risk of PD incidence, their association with serum vitamin D was further analysed separately. Results During a median follow-up of 13.57 years, 2,238 participants developed PD. In summer, time spent outdoors > 5.0 h/day was associated with a reduced PD risk compared with ≤ 2.0 h/day (HR = 0.84, 95% CI, 0.74–0.95). In winter too, time spent outdoors > 2.0 h/day was also associated with a reduced PD risk compared with ≤ 1.0 h/day (HR = 0.85, 95% CI, 0.76–0.94). For annual average time spent outdoors, participants who went outdoors for more than 3.5 h/day had a reduced PD risk than those who went outdoors for ≤ 1.5 h/day (HR = 0.85, 95% CI, 0.75–0.96). Additionally, sex and age differences were observed in the association between time spent outdoors and the PD risk. Moreover, Time spent outdoors was observed to be positively associated with serum vitamin D levels. Compared with serum vitamin D-deficient participants, the risk of PD was reduced by 15% in the sufficient participants. Conclusion In the total population, higher time spent outdoors was linked to a reduced PD risk. However, this association may vary among different age or sex groups.

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Section: Discussionmentioning

confidence: 99%

Association of time spent outdoors with the risk of Parkinson’s disease: a prospective cohort study of 329,359 participants

Hu,

Shi,

Zou

et al. 2024

BMC Neurol

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“…Many studies show that exposure to light, especially at night, suppresses melatonin secretion and brings about changes in sleep profiles [29,30]. Other studies reveal that a high amount of exposure to artificial light at night leads to difficulties in sleep initiation and maintenance, causing sleep phase delay, and even increased depressive symptoms resulting from decrease in sleep quality [31][32][33]. The influence of artificial light exposure at night on physical health has also been studied.…”

Section: Neuroarchitecture From the Perspective Of Circadian Rhythm A...mentioning

confidence: 99%

Neuroarchitecture From the Perspective of Circadian Rhythm, Physical, and Mental Health

Kim¹,

Youn²,

Nam

et al. 2023

Chronobiol Med

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The field of neuroarchitecture explores how various architectural elements impact human physical and mental health, based on neuroscience principles. With the development of functional neuroimaging and electroencephalogram studies, researchers can now visualize and quantify how different architectural factors affect brain activity, emotions, and cognition. Mobile Brain/Body Imaging is a new research methodology that records a moving person’s brain activity and bodily sensations in real time, promising to be a useful tool for space and urban design. In this article, we discuss neuroarchitecture from the perspective of circadian rhythm, physical health, and mental health. Studies have shown that artificial light at night disrupts the circadian rhythm, leading to acute and chronic negative health effects. Conversely, creating a personcentered light environment or incorporating nature-like elements can have a positive impact on health. Research has also shown that exposure to nature reduces self-rumination and contributes to psychological well-being. Neuroarchitecture studies on other factors, such as ceiling height, wall colors, and the movement of people in the building, should be expanded to gain greater insights and practical applications. The convergence of neuroscience and architecture has the potential to identify architectural elements that benefit human physical and mental health.

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“…Over the past centuries, the increasing level of urbanization in modern cities has led to the continuously expanding use of light at night (LAN), especially in the urban area, which is also recognized as light pollution that poses a threat to human health and the natural environment (1)(2)(3)(4). Growing evidence has demonstrated the deleterious effects of LAN exposure on multiple adverse outcomes including obesity, metabolic disorders, mental disorders, cancer, and cardiovascular disease (5)(6)(7)(8). The potential pathological mechanisms might include circadian disruption, sleep deprivation, and suppression of melatonin secretion (9).…”

Section: Introductionmentioning

confidence: 99%

Sex- and age-specific association between outdoor light at night and obesity in Chinese adults: A national cross-sectional study of 98,658 participants from 162 study sites

Zhang

Zheng²,

Xin³

et al. 2023

Front. Endocrinol.

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BackgroundExposure to light at night (LAN) is a potent disruptor of the circadian system. Whether LAN exposure exerts a sex- or age-specific influence on obesity needs investigation.ObjectivesTo estimate the sex- and age-specific associations of exposure to outdoor LAN and obesity based on a national and cross-sectional survey.MethodsThe study included a nationally representative sample of 98,658 adults aged ≥ 18 years who had lived in their current residence for ≥ 6 months from 162 study sites across mainland China in 2010. Outdoor LAN exposure was estimated from satellite imaging data. General obesity was defined as body-mass index (BMI) ≥ 28 kg/m2 and central obesity was defined as waist circumference ≥ 90 cm in men and ≥ 85 cm in women. Linear and logistic regression models were used to examine the associations between LAN exposure and prevalent obesity in sex and age categories.ResultsA monotonically increasing association of outdoor LAN with BMI, waist circumference was observed in all sex and age categories, except for adults aged 18-39 years. Significant associations of LAN exposure with prevalent obesity were observed in each sex and age category, especially in men and older people. Per 1-quintile increase in LAN was associated with 14% increased odds of general obesity in men (odds ratio, OR=1.14, 95% confidence interval, CI=1.07-1.23) and 24% in adults aged ≥ 60 years (OR=1.24, 95% CI=1.14-1.35). Per 1-quintile increase in LAN was associated with 19% increased odds of central obesity in men (OR=1.19, 95% CI=1.11-1.26) and 26% in adults aged ≥ 60 years (OR=1.26, 95% CI=1.17-1.35).ConclusionsIncreased chronic outdoor LAN exposure was associated with increased prevalence of obesity in sex- and age- specific Chinese populations. Public health policies on reducing light pollution at night might be considered in obesity prevention.

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Artificial light at night and risk of mental disorders: A systematic review

Cited by 39 publications

References 55 publications

Association of time spent outdoors with the risk of Parkinson’s disease: a prospective cohort study of 329,359 participants

Association of time spent outdoors with the risk of Parkinson’s disease: a prospective cohort study of 329,359 participants

Neuroarchitecture From the Perspective of Circadian Rhythm, Physical, and Mental Health

Sex- and age-specific association between outdoor light at night and obesity in Chinese adults: A national cross-sectional study of 98,658 participants from 162 study sites

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