Which of the following trace element has Vitamin E sparing effect ?
Copper
Iron
Magnesium
Selenium
Ans. is 'd' i.e., SeleniumSelenium prevents lipid peroxidation and offers protection against free radicals.Vitamin E also has the same effect (antioxidant) though by a different mechanism.Thus selenium and vitamin E supplement each other.Availability of vitamin E reduces the selenium requirment and conversely, in selenium-deficient tissue, vitamin E is depleted.