circadian rhythm

Blue Light and Sleep: What Science Actually Says

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A person using a smartphone in a dark bedroom with warm amber night mode enabled, while a blue-tinted glow appears on a second device beside it, illustrating the difference between standard screen light and night mode settings for blue light sleep science.

Quick Summary Blue light from screens delays sleep by just 2 to 5 minutes under realistic conditions, not the hours that marketing suggests. The 2023 Cochrane review found blue-light-blocking glasses produced inconsistent and unreliable sleep improvements across 17 trials. Screen brightness, proximity to your face, and emotionally engaging content all matter more for sleep than … Read more

Screen Time and Sleep: The Blue Light Myth vs. What Actually Matters

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Person scrolling phone in dark room, representing doomscrolling habit and digital addiction

Reading Time: 7 Minutes The Blue Light Obsession: How We Got Distracted by the Wrong Villain For the better part of a decade, the conversation around screens and sleep has revolved around a single wavelength: blue light. Blue-blocking glasses became a multi-billion-dollar industry. Night Shift and Night Light modes shipped on every device. The narrative … Read more