Is there a difference between Selenium and Selenium Sulfide?
Answer:
Without knowing the exact compound your doctor gave to you I would have to say YES - there is a difference in the selenium compound in the protein bar that you consumed, and the medication that your doctor prescribed to you.
Selenium is a trace mineral that is essential to good health but required only in small amounts [1,2]. Selenium is incorporated into proteins to make selenoproteins, which are important antioxidant enzymes. The antioxidant properties of selenoproteins help prevent cellular damage from free radicals. Free radicals are natural by-products of oxygen metabolism that may contribute to the development of chronic diseases such as cancer and heart disease [2,3]. Other selenoproteins help regulate thyroid function and play a role in the immune system
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Selenium sulfide is an antifungal agent often used in shampoos for the treatment of dandruff and seborrheic dermatitis. In the United States, a 1% strength is available over-the-counter, and a 2.5% strength is also available with a prescription. At the 2.5% strength, selenium sulfide is also used on the body to treat tinea versicolor, a type of fungal skin infection.
yes, there is a difference.
Both the shampoo and protein bar contain selenium, albeit in different compounds. The shampoo, as you said, contains selenium sulfide. The protein bar most likely contain sodium selenite.
P.S.: Congratulations to DanE for not citing his source (carbon copy of Wikipedia).
Selenium is an element found in the periodic table. Sulfur is another element. These two elements can combine to form Selenium sulfide, which is a chemical.
Selenium and sulfur have many similar chemical properties. Selenium can in fact replace Sulfur in the body, but because it is not actually Sulfur itself, this can be fatal. Phosphorus and Arsenic behave the same way.
Trace amounts of Selenium might be necessary for good health, but the actual amount of Selenium is very small. The body requires Copper in the very small amounts as well, but too much Copper can be toxic. Therefore, I doubt the candy bar was 70% Selenium.
BTW: Xerox copying machines use Selenium Sulfide. This compound has the unusual property of aquiring a static charge when exposed to bright light. A rotating drum coated with Selenium aquires "static cling" which attracts powdered ink to it. The ink is then melted onto a piece of paper. The distribution of charge exactly matches the light and dark pattern of the original sheet of paper projected onto the drum as it rotates.
Yes, there is a difference between selenium and selenium sulfide... they are two different substances. However, you should know that just because the label on your protein bar says "selenium" does not mean that it is pure selenium in the bar. It is almost certainly a selenium compound that may or may not be selenium sulfide.
However, there is no problem with using your shampoo AND eating protein bars. The selenium in your protein bar is going into your body, and providing you with a trace mineral that your body needs to function. The selenium sulfide in your shampoo is functioning in an entirely different way... it's simply an additive that helps fight dandruff in your hair, and never enters your body. So there is no problem at all with eating protein bars while you are using the shampoo.
if you at a protein bar with 70% of selenium you should be dead, selenium is an indispensable element in very small quantities, but it's very toxic in higher quantities.
probably it was 70% of "raccomended daily dose of Selenium".
selenium sulfide is a salt, highly toxic for Malassezia furfur, that is a fungus that produce Dandruff.
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