Associations between habitual light exposure-related behaviors and sleep timing and sleep complaints in an international community sample (opens in new tab)

Sleep is essential for health and light is an important environmental signal influencing its timing, quality, and regulation. Retinal light exposure reflects the interplay between environmental illumination and behavioral choices, yet it remains unclear which habitual light exposure-related behaviors meaningfully impact sleep outcomes. In this preregistered secondary data analysis, we examined associations between these behaviors, sleep timing, and sleep complaints in a large, international c...