New research shows that three in four women with breast cancer have low levels of vitamin D. Researchers measured blood levels of vitamin D in about 800 women who survived breast cancer. Hispanics had the lowest levels of vitamin D, followed by African-Americans and non-Hispanic Caucasians. Just 25 percent took any kind of vitamin supplement with vitamin D. Doctors said, “Vitamin D influences pathways related to [cancer]... and vitamin D therapy could be a useful, cost-effective treatment for breast cancer patients. Clinicians may want to consider testing their patients for serum 25-hydroxyvitamin D and offer recommendations to improve vitamin D status.”
Reference: American Journal of Clinical Nutrition; 2008, Vol. 88, No. 1, 133-9.