VIEW PROFESSIONAL VERSION
Selenium excess is rare and is caused by consuming too much of the mineral selenium.
(See also Overview of Minerals.)
Selenium occurs in all tissues. SeleniumSelenium may help protect against some cancers. Selenium is also necessary for the thyroid gland to function normally.
selenium
The diagnosis of selenium excess is based on symptoms. Blood or urinaryselenium levels can be measured.
Treatment of selenium excess involves reducing selenium consumption.
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