Vitamin D's Effectiveness With Breast Cancer and other Cancers
Updated: Dec 17, 2018
Vitamin D for Breast Cancer
Since the early 2000s, scientific investigations into the effects of vitamin D have ballooned. By the end of 2012, there were nearly 34,000 published studies on the effects of vitamin D, and there are well over 800 references in the medical literature showing vitamin D's effectiveness against cancer alone.
According to Carole Baggerly, founder of GrassrootsHealth, as much as 90 percent of ordinary breast cancer may in fact be related to vitamin D deficiency.
Most recently, a meta-analysis of five studies published in the March 2014 issue of Anticancer Research 1 found that patients diagnosed with breast cancer who had high vitamin D levels were twice as likely to survive compared to women with low levels. 2, 3, 4
The analysis included more than 4,500 breast cancer patients over a nine-year period. The high serum group had an average vitamin D level of 30 nanograms per milliliter (ng/ml). Women in the low serum group averaged 17 ng/ml, which is the average vitamin D level found in American breast cancer patients. 5
The study was co-authored by Professor Cedric F. Garland—featured in the 2011 video above—along with other researchers at the San Diego School of Medicine. Funding for the research6 was in part provided by a Congressional allocation to the Penn State Cancer Institute of the Milton S. Hershey Medical Center.