What Does Vitamin D Have to do with Breast Cancer Could Vitamin D be Related to Breast Cancer in Marin County, California
Crossing the Golden Gate Bridge from San Francisco you have the bay on your right, the ocean on your left and Marin County before you. Marin may have some of the "hippest" people and prettiest scenery around but researchers have long been trying to determine why largely white, affluent Marin County also has a higher than average rate of breast cancer.
Studies Point to Some Relationship Between Breast Cancer and Vitamin D but What
There seems to be some relationship between Vitamin D and breast cancer but what that is has not been made clear. Women with low vitamin D levels may have an increased risk for the most aggressive breast cancers,research suggests.
Several studies have suggested a link between low vitamin D levels and breast cancer risk. Back in 2008, a report from Toronto researchers concluded "Vitamin D deficiency is common at breast cancer diagnosis and is associated with poor prognosis". Also researchers from the University of Rochester Medical Center examined vitamin D levels in 155 breast cancer patients in the months before or after they had surgery to treat their disease. They found sub optimal vitamin D levels to be highly predictive of the presence of biological markers associated with more aggressive tumors.
What Does Marin County have to do with Vitamin D and Breast Cancer
In the case of Marin, a small pilot study of women determined through testing to be at high risk for breast cancer, found them to be almost twice as likely to have a variant of a vitamin D receptor as the overall population of 338 in the study. The study concluded "The high frequency of the VDR Apa1 A2/A2 homozygous polymorphism in women designated as elevated risk for breast cancer by the polyfactorial risk model might be related to the high incidence rates of breast cancer in Marin County, CA. Vitamin D supplementation could modify risk of breast cancer in this population."
According to BreastCancer.org "Research suggests that women with low levels of vitamin D have a higher risk of breast cancer. Vitamin D may play a role in controlling normal breast cell growth and may be able to stop breast cancer cells from growing".