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Light matters: Investigating the influence of natural and artificial light on BMI and key mediators
How natural and artificial light relate to body weight and key factors
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Abstract
Daytime light exposure was associated with a lower BMI by 0.17 units, while increased nighttime artificial light exposure was linked to a higher BMI by 0.14 units.
- Daytime natural light exposure is linked to a lower body mass index (BMI), primarily mediated by diet quality.
- Bedtime also plays a mediating role in the association between daytime light exposure and BMI.
- Nighttime artificial light exposure is associated with a higher BMI, with sleep quality and diet quality as significant mediators.
- Findings suggest that misalignment of light exposure with the natural day-night cycle may negatively impact BMI and contribute to unhealthy lifestyle behaviors.
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