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LED Lighting Damages Eyes, Says Spanish Investigator
ENERGY-SAVING ‘green’ LED lights can cause serious damage to the retina, according to recent research by Spanish scientists.
And once the cells are destroyed by prolonged and continuous exposure to LED rays, they cannot be replaced and will not regrow.
This is caused by the high levels of radiation in the ‘blue band’, and is likely to become a global epidemic in the medium term given that computer, mobile phone and TV screens, and even traffic lights and street lights, have been gradually replaced with LED.
How artificial light is wrecking your sleep, and what to do about it
A good laugh and a long sleep are the best cures in the doctor’s book. The evidence for the health benefits of adequate, restful sleep is overwhelming. Decades of research has shown that sleeping between 7 and 9 hours per night can relieve stress, reduce the risk of many chronic diseases, improve memory and cognitive function, and may even help with weight loss.
Blue Light Has a Dark Side
Light at night is bad for your health, and exposure to blue light emitted by electronics and energy-efficient lightbulbs may be especially so. Until the advent of artificial lighting, the sun was the major source of lighting, and people spent their evenings in (relative) darkness. Now, in much of the world, evenings are illuminated, and we take our easy access to all those lumens pretty much for granted.
In Eyes, a Clock Calibrated by Wavelengths of Light
Just as the ear has two purposes — hearing and telling you which way is up — so does the eye. It receives the input necessary for vision, but the retina also houses a network of sensors that detect the rise and fall of daylight. With light, the body sets its internal clock to a 24-hour cycle regulating an estimated 10 percent of our genes.
What’s in a Color? The Unique Human Health Effects of Blue Light
In 1958, J. Woodland Hastings and Beatrice M. Sweeney tested the ability of different wavelengths of light—corresponding to different colors—to shift the circadian rhythm in the photosynthetic marine dinoflagellateGonyaulax polyedra. The greatest power to reset the organism’s daily meter lay in the blues, with a precipitous decline into the greens and a modest boost in the reds.