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high-intensity LED streetlights ... emit unseen blue light that can disturb sleep rhythms and possibly increase the risk of serious health conditions, including cancer and cardiovascular disease. [...]
Some [researchers] noted that exposure to the blue-rich LED outdoor lights might decrease people’s secretion of the hormone melatonin. Secreted at night, melatonin helps balance the reproductive, thyroid and adrenal hormones and regulates the body’s circadian rhythm of sleeping and waking.
— washingtonpost.com
While the American Medical Association cautions cities to re-evaluate their use of high-intensity LED lights for health reasons, others have pointed out that most televisions and computers also emit the blue light wavelength found to be potentially harmful. Aside from human health concerns, LEDs... View full entry
