Brighter Nights and Darker Days Increase Risk of Death by Up to 46%

Jul 19th 2025 3:46pm EDT

By Nicolas Hulscher, MPH A groundbreaking study published in PNAS titled, Brighter nights and darker days predict higher mortality risk: A prospective analysis of personal light exposure in >88,000 individuals, has provided the strongest evidence to date that how much light we are exposed to—both during the day and night—directly impacts our lifespan. Using objective […]

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