24 Jul 2014 Blackmores Institute Vitamins C and E supplements not baddies in cancer 24 Jul 2014 Share Share on LinkedIn Share on Facebook Share on Twitter Share on Google+ Share on Pinterest News Long-term use of vitamins C and E supplements does not increase cancer risk, new analysis from Harvard researchers shows. This new data directly contrasts with recent findings, notably the controversial SELECT trial, that have raised questions about supplementation use and their effects on cancer. × To continue reading this article, please Log In or Sign Up for access.