What You Should Know about Selenium

via Big Think

There is a cheap, safe, chemopreventive agent for prostate cancer. It’s called selenium.

Prostate cancer is the second leading cause of cancer death in American men, so you’d think that if a cheap, safe, effective chemopreventive agent for prostate cancer were discovered, the U.S. government (which pays the bill for treatment of the elderly, via Medicare) would want to get word out fast. As it turns out, there is a cheap, safe, chemopreventive agent for prostate cancer. It’s called selenium. But virtually nothing has been done to get the word out.

The literature on selenium’s prostate-cancer-preventing effects is vast and I won’t try to summarize it here. If you have time to read only one study, probably the most entertaining study to read is the Dutch toenail study, in which 58,279 men aged 55 to 69 donated toenail clippings (which were then analyzed for selenium content). The group was tracked for prostate cancer. The results:

After 6.3 years of follow-up, 540 incident prostate carcinoma cases and 1,211 subcohort members with complete toenail selenium data were available for case-cohort analyses. In multivariate survival analysis, an inverse association between toenail selenium level and prostate cancer risk was observed. Incidence rate ratios in increasing selenium quintiles were 1.00 (ref), 1.05, 0.69, 0.75, and 0.69 (95% confidence interval, 0.48–0.99), respectively (P-trend = 0.008)… The inverse association was more pronounced in ex-smokers than current smokers, and unclear in never-smokers.

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