I see an interresting link between Selenium and Tantric or Taoist practices.

It seems that "cancer and heart disease display spatial patterns that suggest the possible involvement of calcium and selenium deficiencies and mercury excess in their aetiologies. As a consequence, longevity tends to be most common in regions where the environment is calcium- and selenium-enriched but contains only low levels of mercury."


http://cat.inist.fr/?aModele=afficheN&cpsidt=2676274


Now ingesting selenium is not the only factor : what about spending it ?
We learn that "Selenium is concentrated in semen, and sperm cells also contain high levels of the trace mineral."


http://www.drlwilson.com/Articles/SELENIUM2.htm


It seems that 50% of the selenium in males is located in the testicles.

Now Tantric and Taoist texts insist on the fact that loss of semen reduces the life-span.

The various practices of semen retention are necessary for longevity OF MALES.

Would this be linked to selenium spending?