A new study by Dana-Farber Cancer Institute investigators demonstrates that vitamin D can protect some people with colorectal cancer by perking up the immune system's vigilance against tumor cells.
The research, published today by the journal Gut, represents the first time that a link between vitamin D and the immune response to cancer has been shown in a large human population. The finding adds to a growing body of research showing that vitamin D - known as the "sunshine vitamin" because it is produced by the body in response to sunlight exposure - plays a key role in cancer prevention.






