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role of vitamins as anti-oxidants?

 
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Piter



Joined: 05 Jan 2005
Posts: 41

PostPosted: Fri Nov 25, 2005 5:53 pm    Post subject: role of vitamins as anti-oxidants? Reply with quote

Can anybody explain me the role of vitamins as anti-oxidants?
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nature



Joined: 13 Sep 2005
Posts: 199

PostPosted: Sat Nov 26, 2005 9:08 am    Post subject: Reply with quote

Vitamins such as C, E and beta-carotene (a precursor of vitamin A) as well as the mineral selenium have anti-oxidant properties. This means that they protect weak proteins and lipids in the cell membranes and play an important role in intercepting highly reactive oxygen atoms called free radicals.
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Lolo
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PostPosted: Mon Nov 28, 2005 1:36 pm    Post subject: Reply with quote

I know that free radicals are a normal product of metabolism and the body produces its own antioxidants to keep them in balance. Stress, ageing and environmental sources such as polluted air and cigarette smoke can add to the number of free radicals in the body, creating an imbalance.
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Cleo



Joined: 27 Sep 2005
Posts: 58

PostPosted: Tue Nov 29, 2005 4:50 pm    Post subject: Reply with quote

Studies have suggested that the natural antioxidants in fresh fruits and vegetables have a protective effect. For example, vitamin E and beta-carotene appear to protect cell membranes; vitamin C removes free radicals from inside the cell.
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