Modern living is causing a plague of Canada Goose online breast cancer in the Western world. Scientists don’t know all the reasons why, but researchers in America are investigating a disturbing possibility. Perhaps artificial lighting can cause breast cancer.
The human body is adapted to a world where there were 8 canada goose coats on sale to 14 hours of complete darkness each night. But in canada goose clearance 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 workers have to sleep Canada Goose Jackets when the sun is up.
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 cancer.
canadian goose jacket And 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 has nothing to do Canada Goose Parka with vision but picks canada goose uk outlet up light. They’ve even pinpointed the particular colour of light that could be most likely to cause breast cancer blue light at night. canadian goose jacket
canada goose black friday sale Dr buy canada goose jacket cheap George Brainard: In industrialized societies breast cancer canada goose uk shop 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 black friday sale
Narration: Disturbingly canada goose black friday sale scientists don’t know all the reasons why.
canada goose coats Dr George Brainard: Currently we can explain approximately cheap canada goose uk half of Canada Goose Online those breast cancer cases on known risk factors and then the other half we don’t know. canada goose coats
cheap Canada Goose Narration: Remarkably canada goose outlet George’s Brainard’s hunch is that breast cancer is caused by an upset canada goose store in women’s hormones due to too much light cheap Canada Goose at night. But first, what evidence is there that Canada Goose Coats On Sale artificial light can affect our hormones? Well these contraptions that treat winter depression and take canada goose uk black friday away jetlag work because a bright Canada Goose Outlet light in the eyes does change hormone levels. cheap Canada Goose
Graham Phillips, Reporter: This would look pretty weird, I suspect, on a plane.
canada goose coats on sale 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 coats on sale
Canada Goose Parka Graham Phillips: So you wear it into the office the next day. Canada Goose Parka
Canada Goose Outlet Dr George Brainard: You can wear it wherever you like of course. Canada Goose Outlet
canada goose Narration: If light is powerful enough to help the body, there must be a flipside says George. https://www.canadagoosepark.com canada goose
canada goose clearance Dr George Brainard: But just as with any drug any drug which can be used to heal the uk canada goose 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 clearance
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 meant complete darkness. Compare that to life now which is lit 24 hours a day. We have streetlights outside the bedroom windowand shift workers experience full light all night. Does that mean shift workers are more likely to get breast canadian goose jacket cancer? Nurses in hospitals across America can provide the answer. In these buy canada goose jacket tanks at the University of Harvard Medical School are the blood and urine samples from 120,000 nurses.
canada goose deals Dr Eva Schernhammer, Epidemiologist: This is where all the samples are stored. canada goose deals
Graham Phillips: It’s cold liquid nitrogen.
Narration: As well as donating the samples, for almost three decades now the nurses have also filled out detailed lifestyle questionnaires every second year.
buy canada goose jacket Graham Phillips: And for how long? They’ll just keep doing that forever? buy canada goose jacket
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 canada goose factory sale it’s something really special.
buy canada goose jacket cheap Narration: By Canada Goose sale painstakingly trawling through all this data Eva Schernhammer discovered a disturbing trend. buy canada goose jacket cheap
canada goose store 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 canada goose clearance sale work did appear to be associated with a higher canada goose cancer risk in this cohort study. canada goose store
Narration: Eva warns that more studies need to be done canada goose coats to confirm her results, but she believes the reason the night shift workers had a higher cancer risk could be because light at night interferes with uk canada goose outlet their body hormone melatonin.
Canada Goose online 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 shift work. Canada Goose online
canada goose clearance sale Graham Phillips: And what’s so important about melatonin? canada goose clearance sale
Canada Goose sale 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 sale.