Higher Levels Of Vitamin D Correlate With Lower Cancer Risk

Studies have shown that people with higher levels of “sunshine” vitamin D tend to be less at risk for a variety of cancers. A new U.S. study reports that reduced cancer risk becomes measurable at 40 ng/ml (1,200 IU daily) of serum 25-hydroxyvitamin D, with additional benefit at higher levels. The researchers combined data from two earlier studies: a randomized clinical trial of 1,169 women and a prospective cohort study of 1,135 women, providing a larger sample size and a greater range of blood serum levels of vitamin D. It didn’t matter whether the vitamin came from sun exposure, diet or supplements.