Association between Ambient Illumination and Cognitive Impairment: A Population-Based Study of Older

• Published in: Behavioural neurology Vol. 2023; pp. 4131377 - 8
• Main Authors: Shi, Tieyi, Chen, Baozhong
• Format: Journal Article
• Language: English
• Published: Netherlands Hindawi 2023; Hindawi Limited; Wiley
• Subjects: Alzheimer's disease; Animal cognition; Blood pressure; Cognition; Cognition Disorders - diagnosis; Cognitive ability; Cognitive Dysfunction - epidemiology; Creatinine; Cross-Sectional Studies; Glucose; Humans; Hypertension; Kidney diseases; Light; Lighting; Metabolism; Nutrition Surveys; Older people; Population; Population-based studies; Regression analysis; Variables
• ISSN: 0953-4180; 1875-8584
• DOI: 10.1155/2023/4131377

It is well-established that light therapy can alleviate cognitive impairment, and ambient illumination (AI) can quantify the amount of exposure to light. However, the relationship between AI and cognitive impairment has been largely understudied. Objectives. We aimed to examine the cross-sectional associations between AI and impaired cognition using data from the National Health and Nutrition Examination Survey (NHANES) (2011–2013) database. Methods. The correlation between AI and cognitive impairment was analyzed using multivariate logistic regression models. Nonlinear correlations were explored using curve fitting. Results. Multivariate logistic regression yielded an OR of 0.872 (95% CI 0.699, 1.088) for the association between AI and cognitive impairment after adjusting for covariates. Smooth curve fitting showed that the correlation was nonlinear, with an inflection point at 1.22. Conclusions. These results suggested that the level of AI may be linked to cognitive impairment. We found a nonlinear relationship of AI with cognitive impairment.