In this study vitamin D concentrations were measured in the blood of Black/African American and Hispanic/Latina women, These findings indicate that vitamin D may protect women against breast cancer, including those in racial/ethnic groups with low average circulating levels.
Why This Is Important: An increasing body of work suggests that Vitamin D plays some role in protecting people from cancer. Black women tend to have less Vitamin D when it is measured. This study contributes to the growing body of research that reports the value of Vitamin D in Black women with breast cancer.