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Sunlight Research Forum P.O. Box:71 5500 A Veldhoven, Niederlande http://www.sunlightresearchforum.nl
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Sunlight Research Forum

High vitamin D levels reduce the risk of breast cancer

Scientists prove that vitamin D helps to combat breast cancer

(lifePR) (Veldhoven, )
Breast cancer is the most frequent type of cancer affecting women worldwide. Although the chances of recovery are around 90%, this only applies if the cancer is detected early. Surgery, chemotherapy, hair loss or even a mastectomy - women suffering from breast cancer have to contend with all of these possible consequences. There is therefore virtually no other illness which frightens women more.

Since breast-cancer rates increase every year, the diagnosis and treatment options are of particular interest to scientists. It has long been known that high vitamin D levels can reduce the risk of breast cancer. This has been demonstrated in numerous epidemiological and laboratory studies.

With their study involving 67,721 French women, scientists led by Pierre Engel have shown that a minimum vitamin D level is necessary in order to prevent breast cancer. However, this is particularly difficult to achieve at northern latitudes because exposure to sunlight is insufficient to produce enough vitamin D, especially in the winter months. Whether this link is strong enough to meet the Hill criteria¹ had not hitherto been studied.

A group of scientists in the United States led by Sharif B. Mohr has now reviewed the available scientific data relating to breast cancer and vitamin D on the basis of the Hill criteria. After evaluating the findings, they found that the inverse correlation between vitamin D and breast cancer does indeed meet the Hill criteria. This means that there is now scientific proof that vitamin D reduces the risk of breast cancer.

"Modern lifestyles ensure that many women in the west spend too little time in the sun. Although even short UV exposure is enough for vitamin D production, many women in the west nevertheless suffer from a pronounced vitamin D deficiency. High vitamin D levels reduce the risk of breast cancer and also offer protection against many other diseases. In the Northern Hemisphere, the level of sunlight from September to May is often insufficient for the body to produce enough essential vitamin D. It might therefore be sensible to undergo moderate artificial UV exposure on a regular basis", explains Ad Brand of the Sunlight Research Forum (SRF).

1 Hill criteria: The Hill criteria are a medically recognised series of criteria by which a causal link between a specific factor (environmental impact, socio-economic factors, etc.) and the occurrence of a disease pattern can be verified.

Sources:

1) Sharif B. Mohr,1,2,* Edward D. Gorham,1,2 John E. Alcaraz,3 Christopher I. Kane,1 Caroline A. Macera,3 J. Kellogg Parsons,4 Deborah L. Wingard1 and Cedric F. Garland1,2 1Division of Epidemiology; Department of Family and Preventive Medicine; University of California San Diego; La Jolla, CA USA; 2Naval Health Research Center; San Diego, CA USA; 3Department of Epidemiology and Biostatistics; San Diego State University; San Diego, CA USA; 4Division of Urologic Oncology; Department of Surgery; Moores Cancer Center; University of California San Diego; La Jolla, CA USA

2) Pierre Engel1,2, Guy Fagherazzi1,2, Sylvie Mesrine1,2, Marie-Christine Boutron-Ruault1,2, and Francoise Clavel-Chapelon1,2 1Inserm, CESP Centre for Research in Epidemiology and Population Health, U1018, Nutrition, Hormones and Women's Health Team, and 2Paris South University, UMRS 1018, F-94805, Villejuif, France

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Sunlight Research Forum

The Sunlight Research Forum (SRF) is a not-for-profit organisation based in The Netherlands. SRF's aim is to help bring to the fore, the latest medical and scientific information on the effects of moderate UV exposure on man. It takes time, often decades, for new scientific ideas to be accepted and assimilated, first into the general body of scientific knowledge and finally into policy. We want to reduce this time to a minimum so that the benefits of research can lead to a better understanding of UV effects on man and will become available to the public without any unnecessary delay. We hope to provide policy makers with correct information on which to base national health policy and individuals with better information on which to base choices about their lifestyles.

New research and well founded ideas on moderate UV exposure both indoor and outdoor will be presented and discussed in the Sunlight Research Forum by people working in the health disciplines, by academics and by journalists.

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Für die oben stehenden Stories, das angezeigte Event bzw. das Stellenangebot sowie für das angezeigte Bild- und Tonmaterial ist allein der jeweils angegebene Herausgeber (siehe Firmeninfo bei Klick auf Bild/Titel oder Firmeninfo rechte Spalte) verantwortlich. Dieser ist in der Regel auch Urheber der Texte sowie der angehängten Bild-, Ton- und Informationsmaterialien. Die Nutzung von hier veröffentlichten Informationen zur Eigeninformation und redaktionellen Weiterverarbeitung ist in der Regel kostenfrei. Bitte klären Sie vor einer Weiterverwendung urheberrechtliche Fragen mit dem angegebenen Herausgeber. Bei Veröffentlichung senden Sie bitte ein Belegexemplar an service@lifepr.de.