more greenery linked to earlier weekday bedtimes in children
Exact: β = -0.080
Higher neighbourhood vegetation (NDVI) is associated with earlier weekday bedtimes in children
In a cross-sectional study of 16,814 children aged 3–12 in Shanghai, the Normalized Difference Vegetation Index (NDVI) — a satellite-derived measure of green vegetation — was negatively associated with weekday bedtime. This means children in greener neighbourhoods tended to have earlier bedtimes. The effect was consistent across weekdays and free-days, suggesting that access to nature around the home may support healthier, earlier sleep timing in children.
It was observed that higher NDVI was associated with earlier bedtimes (β = -0.080 on weekday and -0.056 for free-day; both p < 0.001)
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physiological and psychological responses measured during urban walks
Psychophysiological responses of 29 subjects were analyzed in relation to urban street scene configuration and color
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+12%
higher prevalence of poor (vs. favorable) sleep health with less greenspace
Low/moderate greenspace was associated with a 12% higher prevalence of poor sleep health compared to favorable sleep health
Symielle A. Gaston et al., 2025, Environmental Research
+32%
higher prevalence of moderate (vs. favorable) sleep health with less greenspace
Low/moderate greenspace was associated with a 32% higher prevalence of moderate sleep health compared to favorable sleep health
Symielle A. Gaston et al., 2025, Environmental Research
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