Dificuldade para Dormir? É a radiação das Telas dos Eletronicos!

Só faltava mais esta! Um ambiente escuro – seja a noite, o quarto com luz apagada, etc. – estimula no corpo a produção de melatonina, um hormonio que atua como mensageiro avisando ao cérebro que é hora de dormir. Mas a luz irradiada pelas telas de monitores, tablets, celulares inibe ou interfere na mensage e depois o sono não vem… Bem, quanto a mim, o que tem acontecido ultimamente, acho que isso parece ser verdade, e vou tentar evitar estas telas à noite, dormir mais cêdo e assim levantar mais c6edo quando então voi paras as telas antes de sair para o trabalho. Seria mais sensato… e saudável. Vejamos o inicio do artigo com esta incômoda noticia no…



Gadgets keeping you awake?

By Leslie Meredith

Standard-Examiner Columnist

Sat, 09/29/2012 – 11:23pm

Having trouble getting to sleep? It could be your iPad, Kindle or any other screen you use for reading before turning the lights out. New research explains why this happens, but what can you do about it — short of going back to paper?

The Lighting Research Center at the Rensselaer Polytechnic Institute recently published a study explaining how readers’ beloved tablets and e-readers keep people up at night. A dark room triggers the body’s production of melatonin, a hormone that acts as a messenger telling the body it’s time to sleep, and lighted screens interfere with that message.

Any light can make it tough to fall asleep (that’s why many parents with young children bemoan the onset of daylight savings time), but light of shorter wavelengths, such as the bluish tints emitted from LED-backlit screens, suppresses nocturnal melatonin, according to the sleep study. The brighter the light and longer the exposure, the more difficulty it will cause in falling asleep.

The findings come just after Amazon introduced its new Kindle PaperWhite e-readers, which offer higher-contrast backlit displays, an answer to Barnes & Noble’s popular Nook with GlowLight. And multi-purpose tablets — such as the iPad, Google Nexus 7 and the newest high-resolution tablets launched last week by Barnes and Noble — are frequently used as e-book readers. But more vivid screens aren’t necessarily better when it comes to sleep.

“The ones that do not emit light should be better [for sleeping],” Mariana Figueiro, director of the Lighting Research Center’s Light and Health Program, told me.

She offered some tips for getting a better night’s sleep without giving up your e-reader or tablet. Figueiro recommends reducing the brightness of the screen to its minimum (which helps conserve battery life, too). Tablet users can go into “settings” to do this. (VEJA RESTO DO ARTIGO NO ADRESS ACIMA)


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