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Selenium deficiency occurs when an organism lacks the required levels of selenium, a critical nutrient in many species.Deficiency, although relatively rare in healthy well-nourished individuals, [1] can have significant negative results, [2] affecting the health of the heart and the nervous system; contributing to depression, anxiety, and dementia; and interfering with reproduction and gestation.
Selenium is found in metal sulfide ores, where it substitutes for sulfur. Commercially, selenium is produced as a byproduct in the refining of these ores. Minerals that are pure selenide or selenate compounds are rare. The chief commercial uses for selenium today are glassmaking and pigments. Selenium is a semiconductor and is used in photocells.
A deficiency of these essential metals may increase susceptibility to heavy metal poisoning. [76] Selenium is the most toxic of the heavy metals that are essential for mammals. [77] Selenium is normally excreted and only becomes toxic when the intake exceeds the excretory capacity. [78]
Selenium is a component of the amino acids selenocysteine and selenomethionine. In humans, selenium is a trace element nutrient that functions as cofactor for glutathione peroxidases and certain forms of thioredoxin reductase. [1] Selenium-containing proteins are produced from inorganic selenium via the intermediacy of selenophosphate (PSeO 3 3 ...
Avocados also contain a bit of zinc (remember, zinc deficiency associated with ED severity), and small amounts of vitamin E and selenium, both of which are linked to improvements in sperm motility ...
Nutritional Muscular Dystrophy (Nutritional Myopathy or White Muscle Disease) is a disease caused by a deficiency of selenium and vitamin E in dietary intake. [1] Soils that contains low levels of selenium produce forages and grains that are deficient in selenium.
Avocados also contain a bit of zinc (remember, zinc deficiency associated with ED severity), and small amounts of vitamin E and selenium, both of which are linked to improvements in sperm motility ...
Again, for those who don't have a diagnosed biotin deficiency, there's not enough evidence to support that biotin is the most effective method for hair growth. In general, biotin can "improve the ...
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