Night Shift Increases The Risk of Prostate Cancer – Study

October 25, 2012 by  
Filed under Prostate Cancer News

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A new study conducted by researchers of the University of Quebec and the Centre INRS-Institut Armand – Frappier has revealed that men who work more at night may likely have increased chance of their cancer level to increase.

For prostate cancer, the risk can be as nearly three times. The result of the study has been published in the American Journal of Epidemiology. The research has been conducted to find the impact of night shift on different kinds of cancers that affect men.

Various results were identified for each cancer. Here are more details on this research:

Working the night shift might raise a man’s risk of prostate cancer by nearly three times, according to a new study in the American Journal of Epidemiology.

Researchers at the University of Quebec and the Centre INRS-Institut Armand-Frappier looked at whether working the night shift raised the risk of different cancers in men. Their analysis was based on 3,137 men who had had cancer at one of 11 different sites on their bodies, as well as 512 controls who didn’t have cancer.

Researchers found specifically that working the night shift is linked with a 2.77 times higher risk of prostate cancer, as well as a 1.76 times higher risk of lung cancer, a 2.03 times higher risk of colon cancer, a 1.74 times higher risk of bladder cancer, a 1.31 times higher risk for non-Hodgkin’s lymphoma, a 20.9 times higher risk for rectal cancer and a 2.27 times higher risk for pancreatic cancer.

While it’s not exactly clear how night shift might affect cancer risk, “exposure to light at night can lead to a reduced production of the sleep hormone melatonin, inducing physiological changes that may provoke the development of tumors,” study researcher Marie-Élise Parent, of the Centre INRS-Institut Armand-Frappier, said in a statement. “This hormone, habitually released in the middle of the night in response to absence of light, plays a pivotal role in hormonal functions and in the immune system.”  Click here to read more and view a slide show.

Finally, the above research is neither quite clear nor elaborate on how night shift causes cancer of the prostate. However, the researchers have pointed out that the connection lies on the release of the hormone melatonin at night.

Further investigation and more studies are still expected on this aspect of research.

Furthermore, the research has given a clue as to the possibility of cancer increase during night shift. More details are provided in the American Journal of Epidemiology.

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