In general, people in the study who used an artificial sweetener had no greater risk of bladder cancer than people in the population as a whole. However, when only the data for heavy users were examined, there was some suggestive evidence of an increased risk, particularly in persons who consumed both diet drinks and sugar substitutes and who used at least one of these two forms heavily. These foods contain certain chemicals thought to reduce the risk of colorectal cancer. While animal studies suggest that selenium protects against cancer, human studies are inconclusive. Because there is only a narrow margin between safe and toxic doses, selenium supplements are not recommended.
Grain products are good sources of selenium.
But you can reduce your cancer risk by regularly eating a balanced diet. Vitamins E plus C and interacting conutrients required for optimal health. A critical and constructive review of epidemiology and supplementation data regarding cardiovascular disease and cancer. SUpplementation en VItamines et Mineraux AntioXydants Study. Antioxidant micronutrients and childhood malignancy during oncological treatment.