28 Jan 2015 Blackmores Institute Vitamin D protects against colorectal cancer 28 Jan 2015 Share Share on LinkedIn Share on Facebook Share on Twitter Share on Google+ Share on Pinterest News Vitamin D can protect some people against colorectal cancer by perking up the immune system's vigilance against tumor cells, new data shows. The research, published online this week in 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. × To continue reading this article, please Log In or Sign Up for access.