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Link: https://www.naturalnews.com/2025-04-16-strategic-morning-light-exposure-combats-sleep-fatigue.html
A study by Osaka Metropolitan University researchers found that exposure to natural light before waking (20-minute dawn simulation) significantly reduces sleepiness and boosts alertness, outperforming both continuous light and artificial darkness. Over two-thirds of Americans suffer from sleep disorders linked to diabetes, depression and cancer — a crisis exacerbated by artificial lighting, which disrupts circadian rhythms and melatonin production. The study highlights the biological importance of natural light’s gradual intensity (like dawn), contrasting it with harmful artificial light exposure at unnatural times.