Exposure to sunlight may decrease risk of advanced breast cancer
 

A research team from the Northern California Cancer Center, the University of Southern California, and Wake Forest University School of Medicine has found that increased exposure to sunlight - which increases levels of vitamin D in the body - may decrease the risk of advanced breast cancer.

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My oncologist gave me an article saying that raising vit D levels may prevent up to half of all breast and two thirds of colorectal cancer cases in the US. Recommended is a daily intake of 2000 IU of vit D3 and, when possible, moderate sun exposure.
Maryanne