several studies have found that blood levels of 25(oh)d could be predictive of colon cancer risk. more recently. investigators looked at both [the] risk for getting colon cancer and the ability to survive as it related to 25(oh)d blood levels among 1 017 persons. participants in the top quarter of 25(oh)d levels as opposed to the lowest quarter had significantly less colon cancer. they also had the lowest death rates from colon cancer and the lowest rates of overall mortality.
how much of an impact does vitamin d have on colon cancer?