ROLE OF ANTIOXIDANTS IN GOOD HEALTH
By - Dr Deepika Malik
When we breathe, we take in oxygen. This oxygen brings about a chemical reaction in our cells called oxidation, which is a byproduct of normal metabolism. The result of oxidation is the formation of molecules known as free radicals, which can damage cells and tissues in the body, leading to certain cancers, heart diseases, and other illnesses. Antioxidants help to clean up free radicals before they can oxygenate and cause harm to the body.
The following table describes various key antioxidants, their sources, and potential benefits.
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Beta-carotene (Beta-carotene is converted to vitamin A in the body.) |
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Flavonoids
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Isoflavones |
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Isothiocyanates |
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Lutein |
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Lycopene |
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Organosulfurs
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Phytic acid |
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Plant estrogen
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Resveratrol |
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Sulforaphane |
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Vitamin C |
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Vitamin E |
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Zeaxanthin |
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Note: Because the study of antioxidants is new, the research is limited and inconclusive. There is no evidence that isolating antioxidants in a supplement offers health benefits or hinders the formation of free radicals. Most research suggests that it’s the combination of nutrients in whole foods that offer the most valuable source of antioxidants. Therefore from a public health perspective it is premature to make recommendations regarding antioxidant supplements and disease prevention. Perhaps the best advice, which comes from several authorities, is to eat 5 servings of fruit or vegetables per day.
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