According to a study conducted by Françoise Clavel-Chapelon, Inserm-Université Paris-Sud 11 Research Director, at the Gustave Roussy Institute in Villejuif, the risk of breast cancer would drop by 25% for women with a serum concentration level of high vitamin D. The results of this study have just been published in the journal Cancer Epidemiology, Biomarkers & Prevention.
These results were obtained from the E3N epidemiological survey carried out by a team from Inserm, with approximately 100,000 French women volunteers born between 1925 and 1950 and followed since 1990. Information concerning their lifestyle and changes in their health are collected every two years since that date.
However, despite this rather encouraging finding on the potential power of vitamin D to fight breast cancer, “clinical trials with different doses of vitamin D are therefore necessary to confirm the benefit of vitamin D on breast cancer” , specifies the study.
Vitamin D can be assimilated by the body in several ways, either through food (fatty fish, eggs, meat, etc.) or through exposure to the sun, via UVB rays.
The study also looked at the link between calcium levels and the occurrence of breast cancer. And in contrast to vitamin D, “no association has been demonstrated between the serum calcium level and the risk of breast cancer”.
