Deficiencies of vitamin D could increase the risk of developing breast cancer. The solution: take (a little) the sun.
French researchers have found a relationship between the level of vitamin D and risk of breast cancer. The latest results from the E3N study indeed show a «significant decrease (25%) risk of breast cancer in women with vitamin D levels in the highest»
E3N is an investigation launched in 1990 and involving nearly 100,000 women who were aged 40-65 years. During their work, Francoise Clavel-Chapelon and colleagues at the Institut Gustave Roussy (Villejuif, near Paris) have asked whether the levels of vitamin D and calcium were or were not associated with risk of breast cancer.
«The levels of calcium do not seem related to breast cancer, says the author. In contrast, for vitamin D, our results support an association between serum levels and decreased risk of breast cancer. »
12 minutes of sunlight sufficient
This work also confirms that «very few women (have) a blood level of vitamin D compliant.» The three quarters are below the reference value of 30 nanograms per milliliter. How to get there? The authors point out that «twelve minutes of sun exposure on 50% of the surface of the skin, one day of sunny weather, equivalent to taking 3,000 IU (75 micrograms) of vitamin D». Plenty to satisfy daily needs.
«However, apart from the risks to the skin, such exposure does not seem suitable for women living in France, which produce little or no vitamin D winter,» says Francoise Clavel-Chapelon. The solution, according to her, then takes the form of a supplement, to consider of course in each case with his doctor. And no question of relying on food ... unless you eat more than 20 eggs per day!
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