Energy-efficient lights a threat to sleep? By Carolyn Y. Johnson | GLOBE STAFF MAY 22, 2013
PAT GREENHOUSE/GLOBE STAFF For years, Dr. Charles Czeisler has studied sleep. The chief of the division of sleep medicine at Brigham and Women's Hospital knows that the invention of the light bulb has profoundly altered human life and biology. But in a perspective piece published Wednesday in the journal Nature, Czeisler argues that the sleep deficiencies that have become so pervasive among adults and children may be threatened yet again by technological progress: LEDs (light-emitting diodes) that consume far less energy than incandescent bulbs. The reason Czeisler is wary of LEDs, which are already in our laptops, televisions, and cellphones, is that they are projected to become even more abundant as governments retire the incandescent bulb and shift toward more energy-efficient sources of light. That matters because it isn't just all artificial light that can reset our body clocks; the exact type of light makes a difference. ... http://www.bostonglobe.com/lifestyle/health-wellness/2013/05/22/tired-energy-efficient-lighting-may-worsen-sleep-deficiencies/kAXK0yBbQDrwN9A6kmy9vJ/story.html Energy-Efficient Lightbulbs May Have Dark Side When It Comes To Health August 8, 2012 http://www.npr.org/blogs/health/2012/08/08/158426970/energy-efficient-lightbulbs-have-a-dark-side-when-it-comes-to-health _______________________________________________ Medianews mailing list [email protected] http://etskywarn.net/mailman/listinfo/medianews_etskywarn.net
