not to be in the morning increases the risk of cancer ? As regards cancer of the breast, maybe. According to a study revealed by BBC News (article in English) and submitted in the beginning of November by british researchers to the conference of the national Institute of cancer research (NCRI) in Glasgow, the biological clock may have an influence on the risk of breast cancer : the early bird (or cheerleader) have in fact slightly less likely than late risers (or owls). The first awaken earlier and have a tendency to be tired earlier in the evening, the seconds have a more difficult time to wake up and get tired later.

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The experience has taken place, in total, on a panel of 410 000 women across the United Kingdom over a period of eight years. Based on a method called ” mendelian randomization “, which allows you to fine-tune the relationship between a risk factor and a disease, the researchers analyzed the fragments of DNA that determine whether a person is rather in the evening or in the morning. According to the results, the risk of breast cancer was 40 to 48 % lower among larks than among owls. The study also highlighted an additional risk of breast cancer in women who slept longer than the recommended duration of seven to eight hours per night, says USA Today.

Read also 40 % of cancers could be avoided

It is still “too early to give advice”

dr. Rebecca Richmond, of the university of Bristol believes that this discovery ” is potentially very important, because the sleep is for everyone is can be easily modified “. But it is still too early to give any indications to follow to prevent this risk. Dr. Richmond explained to the BBC that there is still a need ” to understand what makes an evening person runs more risk than a person in the morning, discover the relationship “. The world health Organization (WHO) had already established a probable link between the disruption of the biological clock linked to the work schedules shifted, and the risk of cancer.

also Read sleep Disorders : why it is necessary to avoid the use of melatonin

On the same subject 40 % of cancers could be avoided

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Teodora Torrendo is an investigative journalist and is a correspondent for European Union. She is based in Zurich in Switzerland and her field of work include covering human rights violations which take place in the various countries in and outside Europe. She also reports about the political situation in European Union. She has worked with some reputed companies in Europe and is currently contributing to USA News as a freelance journalist. As someone who has a Masters’ degree in Human Rights she also delivers lectures on Intercultural Management to students of Human Rights. She is also an authority on the Arab world politics and their diversity.


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