The blue light of modern LED’s is throwing our circadian rhythms out of whack.

This biological cycle regulates how our body functions and repairs itself, and not only includes sleep and wakefulness. Allowing our bodies to get out of sync can contribute to illness, obesity, diabetes, and an increased risk of cancer.

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The widespread use of high-energy visible (HEV) light may have mighty ambitions, but its ubiquity has enormous, unintended, and unforeseen consequences on human health, well-being, and culture.

Related: Blue light accelerates blindness