Is too much artificial light at night making us sick?

Natural Health News – Modern life, characterized by a inadequate exposure to natural light during the day and exposure to artificial light at night may be harming the natural body sleep / wake cycle.

is an emerging issue in health, which epidemiologist at the University of Connecticut, Farmington, Connecticut Richard Stevens cancer, has been studying for three decades.

“has become clear that the typical lighting is affecting our physiology,” says Stevens. “But lighting can be improved. We are learning that the best lighting can reduce these physiological effects. By this we mean lengths longer wavelengths and dimmer at night, and avoiding the bright blue of electronic readers, tablets and smartphones. “

These devices emit enough light blue when used at night to suppress melatonin hormone to induce sleep and disrupt the body’s circadian rhythm, the biological mechanism that allows a restful sleep.

In an article published in the journal Philosophical Transactions of the Royal Society B Stevens and coauthor Yong Zhu Yale University explain the known short-term and long suspected long-term impacts of circadian disruption.

Because of the disease

“It’s a new analysis and synthesis of what we know so far about the effect of light on our health,” says Stevens. “We do not know for sure, but there is growing evidence that the long-term consequences of this are linked to breast cancer, obesity, diabetes and depression, and possibly other cancers.”

As smartphones and tablets become more common, Stevens recommends a general understanding of how the type of light emitted by these devices affect our biology. – A recent study comparing people who use electronic readers who read old books at night showed a clear difference says. E-readers showed delayed onset of melatonin

“This is the amount of light being received at night,” says Stevens. “This does not mean that you have to turn all the lights off at 8 pm every night, it just means that if you have a choice between an electronic reader and a book, the book is less damaging to your biological clock. At night , the better the light, circadian atmosphere is more subdued and, believe it or not, redder, like an incandescent bulb. “

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