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Sunlight reduces risk of breast cancer
Swedish scientists confirm the results of a French study
Over the last few years, more and more studies have been taking a closer look at the links between sunlight and overall cancer risk. The most recent of these studies was carried out by a group of scientists under Prof. Elisabete Weiderpass at the Karolinska Institut in Sweden.
In this study, the researchers observed 49,261 women aged between 30 and 49 for a period of 15 years from 1991/92. Their findings show that the risk of breast cancer in women who used sunbeds was reduced by 44%. Thus, the Swedish scientists also confirmed the result of a similar French study of 10,000 women which showed a 43% reduction in the risk of breast cancer.
The study could not establish any association between cumulative sun exposure (during holidays and in the solarium) between the ages of 10 and 39 and overall cancer risk. However, spending one week a year on sunbathing vacations had an inverse association with the overall risk of cancer of 30% compared to women who never took a holiday in the sun.
"This study shows that UV light has a positive effect on the overall risk of cancer", says Ad Brand of the Sunlight Research Forum (SRF). "It's also interesting to note that solarium use evidently leads to a reduced risk of breast cancer. So we urge women to ensure they get moderate exposure to sunlight while being very careful to avoid sunburn".
1) Prospective Study of UV Exposure and Cancer Incidence Among Swedish Women Ling Yang, Marit B. Veierød, Sven Sandin, Hans-Olov Adami, and Elisabete Weiderpass - Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden, March 25, 2013 American Association for Cancer Research DOI: 10.1158/1055-9965.EPI-11-0071
2) Joint Effects of Dietary Vitamin D and Sun Exposure on Breast Cancer Risk: Results from the French E3N Cohort Pierre Engel, Guy Fagherazzi, Sylvie Mesrine, et al. 2011;20:187-198. Published Online First December 2, 2010. Cancer Epidemiol Biomarkers Prev
Über 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.