I mention all this because many will still prey on unsuspecting citizens to deprive them of their hard-earned retirement funds. The nutritional supplement industry is constantly promoting one vitamin or supplement after another as the latest miracle for some chronic disease. But in another meta-analysis published online in the Cochrane Summaries, the authors concluded that Selenium made no difference for prevention of heart disease.
So while we attempt to eat properly, exercise regularly & take medications as directed, consider entertaining the idea that perhaps this study didn't provide any benefit because the participants had a high period level of Selenium already. Just something to gnaw on . . .