Before we delve into the benefits of blue blocking light, it’s essential to understand what light is and where it comes from. Blue light is part of the visible light spectrum, and it’s emitted by the sun, digital screens, LED lighting, and fluorescent bulbs. While natural blue light during the day can boost alertness and regulate our sleep-wake cycle, excessive exposure to artificial blue light, especially during the evening hours, can wreak havoc on our circadian rhythm.
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