Full spectrum lights, also known as broad spectrum lights, produce "natural" light that is designed to mimic the largest source of natural light available – the sun. Scientists have determined that our bodies are biologically programmed to react positively to sunlight and that our moods can be greatly improved by exposure to sunlight. That's why full spectrum lights are often used as therapy devices for many types of seasonal depression – from the less-severe "winter blues" to cases of full-blown seasonal affective disorder (SAD). These conditions are not caused by seasonal drops in temperature – as many might believe – but rather the decreased exposure to sunlight, which occurs during periods of shorter days and longer nights. Studies show that daily light therapy has a high success rate in alleviating SAD, other forms seasonal depression, and even some sleep disorders.
Full spectrum lights are also used frequently in place of incandescent, fluorescent, and halogen lights indoors. Studies show that our eyes actually function better in natural light, which improves contrast and portrays truer colors than artificial light. Using full spectrum lights at home and at the office can significantly reduce eyestrain. You will also find that performing visually demanding tasks – such as reading, model-building, crafts, sewing, and related activities – are easier to perform.
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