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SHR Neuro Cancer Cardio Lipid Metab Microb

Li, J; Lin, Y; Yang, Z; Heinrich, J; Zhao, T; Yu, Z; Wang, W; Yang, K; Shen, P; Lin, H; Shui, L; Wang, J; Jin, M; Tang, M; Chen, K.
Association of residential greenness and sleep duration in adults: A prospective cohort study in China.
Environ Res. 2025; 268: 120767 Doi: 10.1016/j.envres.2025.120767
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Co-authors Med Uni Graz

Zhao Tianyu

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Abstract:

BACKGROUND: Exposure to residential greenness has been linked with improved sleep duration; however, longitudinal evidence is limited, and the potential mediating effect of ambient fine particulate matter (PM_2.5) has yet to be assessed. METHODS: We obtained data for 19,567 participants across seven counties in a prospective cohort in Ningbo, China. Greenness was estimated using Normalized Difference Vegetation Index (NDVI) within 250-m, 500-m and 1000-m buffer zones, while yearly average PM_2.5 concentrations were measured using validated land-use regression models, both based on individual residential addresses. Sleep duration was assessed using structured questionnaires at baseline and during follow-up. The longitudinal associations between residential greenness and sleep duration were evaluated using linear mixed-effect models. Adjustments for PM_2.5 and county were implemented. To identify the effect of greenness exposure on age-related declines in sleep duration, we included an interaction term between NDVI and visit (baseline and follow-up). Additionally, half-longitudinal mediation analyses were conducted to evaluate the potential mediating role of PM_2.5 in this relationship. RESULTS: Each interquartile range (IQR) increase in NDVI within 250 m, 500 m and 1000 m was associated with increases in sleep duration of 0.044 h (95% CI: 0.028,0.061), 0.045 h (95% CI: 0.028,0.062), and 0.031 h (95% CI: 0.013,0.049), respectively. Associations were attenuated after adjusting for PM_2.5. Farmers, homemakers, and short-nap individuals benefited the most from greenness exposure. Higher greenness exposure significantly lowered PM_2.5 levels, which was associated with a slower decline in sleep duration over the follow-up period. CONCLUSION: Exposure to higher levels of residential greenness was associated with increased sleep duration and a slower decline in sleep over time. County-level heterogeneity in the effects of residential greenness on sleep duration was observed. PM_2.5 partially mediating this relationship.

Find related publications in this database (using NLM MeSH Indexing)

Humans - administration & dosage

China - administration & dosage

Male - administration & dosage

Prospective Studies - administration & dosage

Sleep - administration & dosage

Female - administration & dosage

Middle Aged - administration & dosage

Adult - administration & dosage

Particulate Matter - analysis

Aged - administration & dosage

Environmental Exposure - administration & dosage

Air Pollutants - analysis

Sleep Duration - administration & dosage

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