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Background:
Although recent studies have investigated the influence of vitamin D on sleep patterns, there is a lack of research on the relationship between vitamin D and sleep patterns in Korean workers. This study focused on the relationship between serum vitamin D levels and sleep in fixed day indoor field workers in the electronics manufacturin...
Context in source publication
Context 1
... vitamin D deficiency was found in 34.0% of participants tested in the spring, 12.3% of those tested in the summer, 22.0% of those tested in the autumn, and 42.6% of those tested in the winter; serum vitamin D deficiency was found to significantly more common in the winter group (P < .001). Age, body mass index, education level, employee tenure, and occupational stress did not show a significant differ- ence in serum vitamin D deficiency distribution ( Table 2). ...
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Objective:
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Citations
... Additionally, the study employs large-scale GWAS data to further investigate the causal relationship, with IVW results supporting this connection. Vitamin D receptors (VDRs) are integral to the Table 3 Association between serum vitamin D quartiles and sleep disorders Model 1, no covariates were adjusted; Model 2, age, sex, and race were adjusted; Model 3, Model 2 plus additional adjustment for the married/live with partner status, education level, poverty income ratios, smoking status, alcohol use, BMI, hypertension, and diabetes were adjusted; a p < 0.05 was considered statistically significant 95% CI 95% confidence interval, OR odds ratio * p < 0.05, **p < 0.01, and ***p < 0.001 [26]. Additionally, another study demonstrated that vitamin D supplementation significantly improved sleep duration and decreased sleep disturbances in 20-50 yearolds with sleep disorders [14,27]. ...
Objective
This investigation seeks to examine the association between serum vitamin D concentrations and the prevalence of sleep disorders, additionally elucidating the causal relationship via Mendelian Randomization (MR) analysis.
Materials and methods
This research employed data from the National Health and Nutrition Examination Survey (NHANES) 2011–2016, focusing on adults aged 20–50 years reporting sleep disorders. The research encompassed 4913 American adults. Weighted multivariable logistic regression models and cubic spline analyses were utilized to evaluate the association between serum vitamin D concentrations and the incidence of sleep disorders. Additionally, a two-sample Mendelian Randomization analysis was performed to evaluate the potential causal link between serum vitamin D concentrations and the risk of sleep disorders.
Results
Within the 2011–2016 NHANES cohort of the U.S. population, a notable inverse association was detected between serum vitamin D concentrations and sleep disorders (β = − 3.81, 95% CI: − 6.10 to − 1.52, p = 0.003). After multivariate adjustments, a higher incidence of sleep disorders was associated with lower vitamin D Concentrations (OR 1.52, 95% CI 1.10–2.10, trend p = 0.014). Restricted cubic spline regression analysis indicated a linear association between serum vitamin D concentrations and sleep disorders(non-linearity p > 0.05). Lastly, the two-sample MR analysis yielded evidence supporting a potential causal connection between serum vitamin D concentrations and sleep disorders, with each unit increase in genetically predicted serum vitamin D reducing the odds ratio to 0.78 (95% CI 0.61–0.99, p = 0.044).
Conclusions
These results imply that lower vitamin D concentrations in the population might correlate with a heightened risk of sleep disorders, suggesting the importance of considering vitamin D supplementation when treating sleep disorders.
... Obesity, hypertension, type 2 diabetes mellitus, and cardiovascular disease (CVD) are some of the negative health consequences that could result from sleep deprivation (Hargens et al., 2020) which could also happen to students when they ignore the importance of sleep. A healthy lifestyle, including a nutritious diet, has been shown to improve sleep quality (Jung et al., 2017). Other than that, a variety kind of sports, such as eight-section brocade (Lv et al., 2019), and aerobic exercises (El-Kader & Al-Jiffri, 2019), can enhance sleep quality, and they are less expensive and can be accessed easily (Zhai et al., 2020) which could be the best intervention for students to practice. ...
Stress is a normal occurrence in human lives, and university students can never escape from experiencing stress at least once during their university years, during which they have to face a variety of stressors. Poor sleep quality happens to people of all ages worldwide, particularly university students. Numerous studies have reported that stress significantly correlates with sleep quality among university students from various courses. However, these variables were less explored by past researchers, specifically on engineering students. In order to explore more information on these variables among engineering university students, a cross-sectional, quantitative, correlational study is conducted to identify the relationship between stress and sleep quality among engineering students in Malaysia. A total of 272 undergraduate engineering students from three public universities in Malaysia were involved in the study. The Perceived Stress Scale (PSS-10) and Pittsburgh Sleep Quality Index (PSQI) were used. The result from the correlational analysis shows that there is a significant negative relationship between stress and sleep quality among engineering students. The study’s findings could be used as a reference for future studies and recommend interventions to improve students’ stress and sleep quality levels.
... Further, few studies suggest that there is a correlation between vitamin D levels in the blood and sleep quality. Low levels of vitamin D have been linked to a higher risk of reduced sleep duration, poorer sleep quality, and general sleep disturbances [39][40][41]. However, 1 small study of 40 IFN-β-treated multiple sclerosis patients suggested that a daily intake of 4370 IU of vitamin D levels may be linked to lower melatonin levels in people with multiple sclerosis [42]. ...
Vitamin D is a pleiotropic hormone that plays a vital role in regulating bone growth, maintaining calcium and phosphate homeostasis, modulating immune function, and a wide range of other pleiotrophic actions in humans, which have increased the attention for its clinical applications. Despite its importance, vitamin D deficiency is prevalent worldwide and is related to a range of pathophysiological conditions, including an increased risk of osteoporosis and chronic and autoimmune diseases. The recommended daily doses of vitamin D vary depending on genetics, age, sex, and health status, with specific doses recommended for infants, children, adults, and those at increased risk of deficiency or specific health conditions. Maintaining adequate vitamin D levels is essential for optimal health, and together with sun exposure, appropriate supplementation strategies can help achieve this goal. Vitamin D supplementation is commonly used to maintain adequate levels, and the optimal administration strategy, such as a daily dose vs. a bolus, is still being investigated. This review aims to understand vitamin D physiology and the impact of relevant vitamin D polymorphisms and to evaluate the role of a daily dose versus a bolus in maintaining optimal vitamin D levels and clinical health outcomes. It also provides suggested clinical guidelines for clinicians based on the most recent scientific evidence.
... The brainstem, which is the center of sleep, also contains vitamin D receptors. This is supported by previous research by Jung et al (2017) in Korea, which found that workers with poor sleep quality are more likely to be vitamin D deficient (23). Previous research yielded contradictory results to the findings of this study, which could be attributed to the data collection method. ...
... The brainstem, which is the center of sleep, also contains vitamin D receptors. This is supported by previous research by Jung et al (2017) in Korea, which found that workers with poor sleep quality are more likely to be vitamin D deficient (23). Previous research yielded contradictory results to the findings of this study, which could be attributed to the data collection method. ...
... Previous research yielded contradictory results to the findings of this study, which could be attributed to the data collection method. Jung et al measured the serum concentration of vitamin D in the blood so that vitamin D deficiency could be diagnosed (23). In this study, data was collected by filling out a questionnaire to determine the adequacy of the respondent's vitamin D intake, so the risk of deficiency due to a lack of vitamin D intake could only be estimated. ...
Background : Vitamin D deficiency is a common health problem in the world, even in tropical countries such as Indonesia. The Lack of vitamin D intake from food or supplements can increase the risk of having vitamin D deficiency. The association between vitamin D and sleep quality has been proven by the discovery of vitamin D receptors in the brain and brainstem, which are the sleep centers of the body. Vitamin D also takes part in the process of light transduction and melatonin production, that affects circadian rhythm and sleep quality. Poor sleep quality often causes health problems which will affect the quality of life, work productivity, and increases the risk of death. The purpose of this study is to determine the association between vitamin D intake and sleep quality index within the 17-35 year age group.Method : This study is an observational analytic study using a cross-sectional approach. Data was collected using consecutive sampling methods. Vitamin D intake was measured by the Vitamin D Estimation Only - Food Frequency Questionnaire (VIDEO-FFQ) and sleep quality index was measured by the Pittsburgh Sleep Quality Index (PSQI). Data analysis is proceeded using the chi-square method.Results : The total of respondents were 119. 68,1% of the respondents had inadequate vitamin D intake and 80.4% of the respondents had poor sleep quality index. The analysis shows that there was no significant association between vitamin D intake and sleep quality index (p value = 0.325). Conclusion : Most of the respondents had inadequate vitamin intake and poor sleep quality index. There was no significant association between vitamin D intake and sleep quality index within the 17-35 year age group. Key words: Vitamin D intake, food and supplement, sleep quality index, 17-35 year age group
... On the other hand, some studies reported that vitamin D is effective not only on sleep duration but also on sleep quality. Jung et al. carried out a cross-sectional study with indoor workers in the manufacturing industry between January-December 2015 and found a significant association between serum vitamin D deficiency and poor sleep quality (29). In a cohort study conducted with women in the first trimester of pregnancy in Singapore, vitamin D deficiency was found to be associated with poor sleep quality (30). ...
Objectives:
Although clinical research is still going on to determine any relationship between vitamin D and sleep regulation, only few studies have identified the role of vitamin D metabolism in sleep disorders. The current study aims to examine the incidence of vitamin D deficiency/insufficiency in the sample group and its effects on sleep quality and melatonin level.
Methods:
A cross-sectional study was designed. A total of 79 women aged 18-49 years who applied to the research and training hospital between 1 October and 30 November 2021 participated in the study. Data were collected using a socio-demographic questionnaire prepared by the authors and the Pittsburgh Sleep Quality Index (PSQI). Blood samples were taken from the participants, also, 25-OH-vitamin D3 and melatonin levels in serum samples were measured by ELISA.
Results:
The participants (n = 79) were aged 29.61 ± 11.14 years. The mean total PSQI scores of the participants were calculated as 5.77 ± 2.70. We determined that 64.6% of the participants had vitamin D deficiency, 21.5% had vitamin D insufficiency, and 13.9% of the participants were vitamin D sufficient. The mean melatonin level was found to be 24.77 ± 27.77 ng/L. We determined that an increase in the melatonin levels decreases the risk of vitamin D deficiency. Besides, our findings showed a good positive correlation between serum melatonin and 25 OH vitamin D3 levels (r = 0.544, p < 0.001).
Conclusion:
Our results indicate that the correction of vitamin D insufficiency can positively affect melatonin levels, therefore, it may positively contribute to the treatment of sleep disorders related to melatonin deficiency.
... Work stress and shift work impair sleep quality in the manufacturing industries and reduce job productivity and workers' general health (74)(75)(76). In addition, vitamin D deficiency has been suggested to influence sleep quality (73). ...
Background and Objective: Numerous factors in industrial environments affect employees' sleep quality and cause poor sleep quality and its related disorders. This study was conducted to investigate factors influencing sleep quality and its related disorders in the process, manufacturing, and service industries.
Materials and Methods: In this study, the related articles published in the Embase, PubMed, Google Scholar, Scopus, Web of Science, Magiran, SID, IranMedex, and IranDoc databases from 2010 to 2021 were reviewed. Some of the used search terms were "sleep", "sleep quality", "sleep disorder", "process industry", "manufacturing industry", and "service industry". searched articles were reviewed to extract the required data.
Results: Out of the 431 studies identified, 59 articles were eligible for analysis, of which 19 studies were conducted in process industries, 35 studies in service industries, and 5 studies in manufacturing industries. In process industries, fac-tors such as anxiety, depression, shift work, job stress, and exposure to high noise and vibration reduce workers' sleep quality. In the manufacturing industry, work stress, and shift work impair sleep quality. Inadequate sleep quality was common in the service industry, and several factors, including depression, job stress, shift work, and musculoskeletal disorders play a role in this regard.
Conclusion: The results indicate that working conditions are such that people's sleep can be affected by various factors, so more attention should be paid to sleep health. Shift plans should be implemented following the best method. Moreover, it is critical to focus on sleep quality in the workplace.
... Higher concentrations of serum 25-hydroxyvitamin D (s-25(OH)D), the main circulating vitamin D metabolite, have been associated with longer and earlier night sleep [15]. Moreover, vitamin D deficiency has been associated with short sleep duration [16][17][18][19][20][21][22][23], poor self-reported sleep quality [24,25], and an increased risk of daytime sleepiness [26,27]. However, none of these previous studies have been performed in populations living in an Arctic area, in which the prevalence of both insufficient sleep duration and insomnia has been reported as worryingly high [28]. ...
... The results regarding insomnia in the present analysis conflicts with previous reports of an inverse association between 25(OH)D and sleep quality [7]. However, there are some important aspects that should be considered when comparing these results: In the meta-analysis by Gao et al. [7], only four of the included studies had more than 1000 participants [16,22,24,46]. Only two of these studies included data on sleep quality [24,46] and neither matched the current study population of middle-aged and older (±40 years) men and women. ...
... However, there are some important aspects that should be considered when comparing these results: In the meta-analysis by Gao et al. [7], only four of the included studies had more than 1000 participants [16,22,24,46]. Only two of these studies included data on sleep quality [24,46] and neither matched the current study population of middle-aged and older (±40 years) men and women. Surprisingly, the present study showed a higher risk of insomnia in women in the high s-25(OH)D group compared to women with sufficient s-25(OH)D. ...
Objective
To investigate the relation between serum 25-hydroxyvitamin D (s-25(OH)D) and subjective sleep measures in an Arctic population (69°N).
Methods
Cross-sectional data was collected from 21,083 individuals (aged ≥40 years) participating in the population based Tromsø Study: Tromsø7 (2015-2016). The present study included 20,438 participants, after having excluded respondents missing data on s-25(OH)D (n=161) and/or subjective sleep measures (including sleep duration, insomnia, and daytime sleepiness)(n=490). Based on s-25(OH)D (assessed using LC-MS/MS), participants were grouped as deficient (<30 nmol/L), insufficient (30-49.9 nmol/L), sufficient (50-75 nmol/L), or high (>75 nmol/L). Sleep duration was grouped as inadequate (ISD) if <7 or ≥9 hours. Linear and logistic regression were used to calculate unstandardized β-values and odds ratios [95% confidence intervals]. The analyses were adjusted for season, age, BMI, lifestyle factors and relevant comorbidities.
Results
In both men and women, s-25(OH)D was positively associated with sleep duration, and compared to the sufficient s-25(OH)D group, the insufficient s-25(OH)D group reported significantly shorter sleep duration in both sexes. There was an increased odds of ISD in both men and women but adjusted for confounding factors this was only significant in women (1.16 [1.03, 1.32], p=.017). In men, there were no significant associations between s-25(OH)D and the remaining sleep measures. Women in the high s-25(OH)D group had lower ESS-scores (-0.28 [-0.47, -0.08], p=.006), but higher odds of insomnia (1.16 [1.01, 1.33], p=.036) compared to women in the sufficient group.
Conclusions
In this Arctic population, a tenuous association was found between s-25(OH)D and subjective sleep measures, predominantly in women.
... This was associated with sleep duration even when sleep was assessed by Actigraphy or Polysomnography in adults (Massa et al., 2015). Other studies have shown that the quality of sleep and daily drowsiness is impaired by vitamin D deficiency (Cheng et al., 2017;Jung et al., 2017;McCarty et al., 2012). Several studies have shown a strong association between vitamin D deficiency and OSA, especially in adults. ...
Background: Poor sleep quality is a common problem in the general population that affects the quality of life of individuals. Aim: This systematic review aimed to determine the effect of vitamin D on sleep quality (primary outcome) and side effects (secondary outcome). Methods: A systematic search was performed using Cochrane Library, PubMed, Embase, Web of Sciences, Scopus, Google Scholar, SID, and Magiran databases with no limit at the time of publication. Cochrane collaboration instrument was used to evaluate the quality of the included studies. RevMan software was used for meta-analysis. Mean Difference was calculated due to the same sleep quality measurement tools in all studies. Heterogeneity of studies was assessed using I-squared (I 2). Due to high heterogeneity (I 2 > 75%), Random Effect was used instead of Fixed Effect. Results: Out of a total of 1637 titles and abstracts found, after removing duplicate items (23 items), 1596 items were removed due to irrelevance and lack of inclusion criteria. 18 articles were fully studied due to insufficient abstract information and finally, 5 articles were entered into systematic review and meta-analysis. The results of the meta-analysis showed that the use of vitamin D supplementation significantly improves sleep quality (MD: −1.32; 95%CI: −2.55 to −0.09; P = 0.04). Conclusions: Also, according to the findings of this study, receiving vitamin D supplementation did not cause any side effects. According to the results of this review study, sleep quality in people receiving vitamin D significantly improved compared to the control group.
... Low serum levels of 25-hydroxyvitamin D may impair sleep quality. The relationship between sleep disorders and vitamin D deficiency is not fully understood [85]. ...
Sleep is a cyclically occurring, transient, and functional state that is controlled primarily by neurobiological processes. Sleep disorders and insomnia are increasingly being diagnosed at all ages. These are risk factors for depression, mental disorders, coronary heart disease, metabolic syndrome, and/or high blood pressure. A number of factors can negatively affect sleep quality, including the use of stimulants, stress, anxiety, and the use of electronic devices before sleep. A growing body of evidence suggests that nutrition, physical activity, and sleep hygiene can significantly affect the quality of sleep. The aim of this review was to discuss the factors that can affect sleep quality, such as nutrition, stimulants, and physical activity.
... Helpless sleep quality will lessen the personal satisfaction identified with medical issue from all aspects. (Jung et al., 2017) This can prompt diminished execution during the day, expanding the danger of engine vehicles or work mishaps and cause hormonal changes identified with sleep issues and weight on neuroendocrine system. (Adrien, 2002) Systematic surveys and meta-investigations report that Vitamin D lack is related with a higher danger of sleep aggravations. ...
... The longer the sleep latency it takes a person to fall asleep, the lower the quality of one's sleep. (Jung et al., 2017) ...
... IOM suggests close to 4,000 IU each day for grown-ups. Notwithstanding, now and then specialists recommend more high dosages for individuals who are lacking in Vitamin D. The reasons for low Vitamin D can be found in table 1. (Jung et al., 2017) The system of sleep is directed in the suprachiasmatic core of the nerve center (SCN) by the passage of daylight through the retina. (de Oliveira et al., 2017) This is as per test concentrates on which express that the clock circadian temperature is impacted by changes in light, temperature and Vitamin D. Day by day serum 25(OH)D levels shows circadian motions. ...
