Researchers from Imperial College London have found that increasing vitamin D levels may slow the development and progression of breast cancer.
The study authors recruited 279 women with invasive breast cancer. 204 women were in the early stages of the disease, while 75 were in the advanced stage.
Measuring levels of 25-hydroxyvitamin D (the storage form of the vitamin), researchers found that women with the early stages of the disease had significantly higher levels of the vitamin than the women with the advanced stages of the disease.
These latest findings add to previous research that suggests vitamin D levels may be protective against various cancers including colorectal and prostate.
Vitamin D in the diet without fortified foods or supplements is difficult, since few foods are high in the vitamin. Most vitamin D comes from fortified foods and is made in the skin after exposure to sunlight.
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