The University of California San Diego Health System recently reported in its article that Vitamin D Increases Breast Cancer Patient Survival. The article begins: ‘Breast cancer patients with high levels of vitamin D in their blood are twice as likely to survive the disease as women with low levels of this nutrient, report University of California, San Diego School of Medicine researchers in the March issue of Anticancer Research.’
An urgent conclusion in the article: "There is no compelling reason to wait for further studies to incorporate vitamin D supplements into standard care regimens since a safe dose of vitamin D needed to achieve high serum levels above 30 nanograms per milliliter has already been established, said Garland."
The recommended articles below, written in 2012 and 2013, basically state the same thing about the effectiveness of Vitamin D against breast cancer. The point is Vitamin D has been found to be effective for both preventing breast cancer and surviving breast cancer.
Since most people have been found to have Vitamin D deficiencies, it is important to be tested before starting an aggressive/high dosage supplement regimen.
Dr. Andrew Weil, highly respected Integrative Medical Doctor, explains why Vitamin D3 is preferred over Vitamin D2 in the short video.