So longer periods of shift work did appear to be associated

Опубликовано: Июнь 23, 2014 в 14:57


Категории: Новости

Light Pollution

canada goose outlet store uk Modern living is canada goose coats on sale causing a plague of breast cancer in the Western world. Scientists don’t know all the reasons why, but researchers in America are investigating a disturbing possibility. Perhaps canada goose uk outlet artificial lighting can cause breast cancer. canada goose outlet store uk

canada goose vest outlet The human body is adapted to a world where there were 8 to 14 hours of complete darkness canada goose coats each night. But in modern life complete darkness is very rare. We live in cities that are brightly lit 24 hours a day; some of us even sleep with streetlights right outside our windows. And shift canada goose black friday sale workers have to sleep when the sun is up. canada goose vest outlet

canada goose outlet kokemuksia Evidence for this is a recent large study at Harvard University, where a researcher found that shift workers were indeed more likely to get breast Canada Goose online cancer. canada goose outlet kokemuksia

canada goose uk site And canada goose clearance sale scientists in Philadelphia think they’ve discovered the way light affects the body’s hormones. They’ve uncovered a special receptor in the eyes that canada goose clearance has nothing to do with vision but picks up Canada Goose sale light. They’ve even pinpointed the particular colour of light that could be Canada Goose Jackets most likely to cause breast cancer blue light at canada goose factory sale night. canada goose uk site

canada goose jacket outlet Dr George Brainard: In industrialized societies breast cancer rates are astonishingly high and they’ve been growing. One out of every eight women will have breast cancer at some time during their lifespan canada goose jacket outlet

canada goose outlet in vancouver Narration: Disturbingly scientists don’t know all the reasons uk canada goose outlet why. canada goose outlet in vancouver

canada goose outlet belgium Dr George Brainard: Currently we can explain approximately half of those breast canada goose store cancer cases on known risk factors and then the other half we don’t know. canada goose outlet belgium

canada goose outlet winnipeg Narration: Remarkably George’s Brainard’s hunch is that breast cancer is caused buy canada goose jacket by an upset in women’s hormones due to too much buy canada goose jacket cheap light at night. But first, what evidence is there that artificial light can affect our hormones? Well these contraptions uk canada goose that treat winter depression and take away jetlag work because a bright light in the eyes does change hormone levels. canada goose outlet winnipeg

canada goose outlet store calgary Graham Phillips, Reporter: This would look pretty weird, I suspect, on a plane. canada goose outlet store calgary

canada goose kensington parka uk Dr George Brainard: Yes, but one doesn’t necessarily wear it during the flight. You may be wearing it after the flight or before the flight depending where you’re leaving from and where you’re going to. canada goose kensington parka uk

canada goose outlet in chicago Graham Phillips: So you wear it into the office the next day. canada goose outlet in chicago

canada goose outlet germany Dr George Brainard: You can wear it wherever you like of course. canada goose outlet germany

canada goose outlet boston Narration: If light is powerful enough to help Canada Goose Online the body, there must be a flipside says George. canada goose outlet boston

canada goose outlet mississauga Dr George Brainard: But just as with any drug any drug which can be used to heal the body, can be misused to harm the body and thus we suspect that there maybe the same kinds of things going on with light. canada goose outlet mississauga

goose outlet canada Narration: When you consider the natural world, it’s clear our bodies weren’t designed for lights at night. For almost all of human history night Canada Goose Coats On Sale meant complete darkness. Compare that to life now which is lit 24 hours a day. We have cheap Canada Goose streetlights outside the bedroom windowand shift workers experience full light all night. Does Canada Goose Parka that mean shift workers are more likely to get breast cancer? Nurses in hospitals across America can provide the answer. In canada goose these tanks at the University of Harvard Medical School are the blood and urine canada goose uk black friday samples from 120,000 nurses. goose outlet canada

canada goose outlet price Dr Eva Schernhammer, canadian goose jacket Epidemiologist: This is where all the samples are stored. canada goose outlet price

canada goose outlet las vegas Graham Phillips: It’s cold liquid nitrogen. canada goose outlet las vegas

canada goose outlet toronto factory Narration: As well as donating the samples, for almost three decades now the nurses have also filled out detailed lifestyle questionnaires every Canada Goose Outlet second year. canada goose outlet toronto factory

canada goose outlet us Graham Phillips: And for how long? They’ll just keep doing that forever? canada goose outlet us

canada goose factory outlet vancouver Dr Eva Schernhammer: Doing it forever. They’re very dedicated. It’s amazing. They look at it as an honour to be a nurse to participate in this study. So for them it’s something really special. canada goose factory outlet vancouver

canada goose outlet store near me Narration: By painstakingly trawling through all this data Eva Schernhammer discovered a disturbing trend. canada goose outlet store near me

canada goose outlet in usa Dr Eva Schernhammer: We did find women who reported working more than 15 or 30 years respectively shifts they had a higher breast cancer and colorectal cancer risk. So longer periods of shift work did appear to be associated with a higher cancer risk in this cohort study. canada goose outlet in usa

canada goose outlet parka Narration: Eva warns that more studies need to be done to confirm her results, but canada goose uk shop she believes the reason the night shift workers had a higher cancer risk could be because light at night interferes with their body hormone melatonin. canada goose outlet parka

canada goose outlet black friday Dr Eva Schernhammer: So if people constantly work at night they will always have lower melatonin levels on average than people who do not work at night. Or who are not exposed to light at night. Because it can be exposure to any kind of light not only cheap canada goose uk shift work. canada canada goose jackets goose outlet black friday

canada goose jacket outlet sale Graham Phillips: And what’s so important about melatonin? canada goose jacket outlet sale

canada goose outlet michigan Dr Eva Schernhammer: Well it’s been shown in animal studies repeatedly to work cancer protective. So it seems to protect against cancer growth canada goose outlet michigan.

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