✪✪✪✪✪ http://www.theaudiopedia.com ✪✪✪✪✪ ✪✪✪✪✪ The Audiopedia Android application, INSTALL NOW – https://play.google.com/store/apps/details?id=com.wTheAudiopedia_8069473 ✪✪✪✪✪ What is ANTIOXIDANT? What does ANTIOXIDANT mean? ANTIOXIDANT meaning – ANTIOXIDANT pronunciation – ANTIOXIDANT definition – ANTIOXIDANT explanation – How to pronounce ANTIOXIDANT? Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license. An antioxidant is a molecule that inhibits the oxidation of other molecules. Oxidation is a chemical reaction that can produce free radicals, leading to chain reactions that may damage cells. Antioxidants such as thiols or ascorbic acid (vitamin C) terminate these chain reactions. To balance the oxidative state, plants and animals maintain complex systems of overlapping antioxidants, such as glutathione and enzymes (e.g., catalase and superoxide dismutase) produced internally or the dietary antioxidants, vitamin A, vitamin C and vitamin E. Diets containing foods rich in antioxidant vitamins or antioxidant dietary supplements do not improve health nor are they effective in preventing diseases. Randomized clinical trials including supplements of beta-carotene, vitamin A and vitamin E singly or in different combinations found no effect on mortality rate and cancer risk, or may even increase cancer risk. Supplementation with selenium or vitamin E does not reduce the risk of cardiovascular disease. Oxidative stress can be considered as either a cause or consequence of some diseases, an area of research stimulating drug development for antioxidant compounds for use as potential therapies. Industrial antioxidants have diverse uses, such as food and cosmetics preservatives and inhibitors of rubber or gasoline deterioration. Although certain levels of antioxidant vitamins in the diet are required for good health, there is considerable doubt as to whether antioxidant-rich foods or supplements have anti-disease activity; and if they are actually beneficial, it is unknown which antioxidant(s) are needed from the diet and in what amounts beyond typical dietary intake. Although dietary antioxidants have been investigated for potential effects on neurodegenerative diseases such as Alzheimer’s disease, Parkinson’s disease, and amyotrophic lateral sclerosis, these studies have been inconclusive. Tirilazad mesylate is an anti-oxidant steroid derivative that inhibits the lipid peroxidation that is believed to play a key in neuronal death in stroke and head injury. It demonstrated activity in animal models of stroke. Human trials demonstrated no effect on mortality or other outcomes in subarachnoid haemorrhage, and worsened results in ischemic stroke. Common pharmaceuticals (and supplements) with antioxidant properties may interfere with the efficacy of certain anticancer medication and radiation.
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- Post published:November 18, 2021
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