Moderate selenium levels tied to longer life, however...

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*Moderate selenium levels tied to longer life.

<http://www.reutershealth.com/archive/2008/02/26/eline/links/20080226elin003.htm\

l>*

While moderate levels of the mineral are associated with longevity, once

selenium levels climb past a certain mark, the odds of dying from any

cause, or from cancer specifically, begin to tip upward, a new study

suggests.

Reuters Health, 27 February 2008.