ArticleSleep & breathing = Schlaf & Atmung2025
Association between vitamin D level and sleep quality in the elderly population: a prospective cohort study.
Article in Sleep & breathing = Schlaf & Atmung, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Authors and funding
10 authors.
Funding
Abstract
purposeVitamin D is essential not only for skeletal health but also for regulating sleep. Recent studies suggest a link between vitamin D deficiency and poor sleep quality, including lower sleep efficiency and shorter sleep duration. This study aimed to investigate the relationship between sleep quality and serum vitamin D levels in healthy elderly individuals.
methodsThis study examined the association between serum vitamin D levels and sleep quality in individuals aged 60 years and above residing in Taipei's Health & Culture Village and Active Aging Center. A total of 465 participants were enrolled, with those exhibiting specific organ abnormalities or dysfunctions excluded. Sleep quality was assessed using the Pittsburgh Sleep Quality Index (PSQI), and vitamin D levels were measured using enzyme-linked immunosorbent assay (ELISA). The relationships between vitamin D levels and PSQI scores were analyzed, with a focus on the daytime dysfunction component of the PSQI.
resultsAmong the seven domains of the PSQI, the daytime dysfunction domain had the strongest statistical association with serum vitamin D levels (p = 0.044). Participants without daytime dysfunction had significantly higher vitamin D levels than did those with daytime dysfunction (p = 0.04). No significant associations were detected between vitamin D levels and other factors, such as sex or age.
conclusionsHigher serum vitamin D levels are associated with better sleep quality in elderly individuals, particularly in those without daytime dysfunction. This finding highlights the potential importance of maintaining adequate vitamin D levels to promote healthy sleep patterns in older adults.
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