March 16, 2009 -- Question: What is the relationship between selenium and prostate cancer?
Answer: Selenium is a mineral that is found in foods such as Brazil nuts, halibut, salmon and brown rice.
Previous studies have found that higher levels of selenium are associated with lower risks of prostate cancer, especially in men taking vitamin E.
Because of this intriguing evidence, there is a large, randomized study looking at groups of men taking selenium and vitamin E compared to groups of men not taking selenium or vitamin E to look at the risk for prostate cancer development.
We await the results of this study to determine if selenium supplementation is useful to reduce the risk for prostate cancer.