Vitamin D and Greater Colon Protection 

Vitamin D is probably most known for its association with bone health, but a recent study suggests higher levels of vitamin D in the bloodstream may have a protective role against colorectal malignancy. In this study, the people who had lower levels of vitamin D had a 31 percent higher risk of colorectal malignancy, and those with higher levels of circulating 25(OH)D  had a 22 percent lower risk.

The study included 17 cohorts, comprised of 5706 colorectal cancer patients and 7107 control subjects, all with a wide range of circulating 25(OH)D levels. The varying vitamin D levels were categorized based on what is currently recommended by the Institute of Medicine (IOM), based on bone health...