Free Radicals Explained

The free-radical theory of aging (FRTA) states that organisms age because cells accumulate free radical damage over time.. A free radical is any atom or molecule that has a single unpaired electron in an outer shell. While a few free radicals such as melanin are not chemically reactive , most biologically-relevant free radicals are highly reactive.For most biological structures, free radical damage is closely associated with oxidative damage. Antioxidants are reducing agents , and limit oxidative damage to biological structures by passivating free radicals.

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Tags: Antioxidant therapy ,Calorie restriction Antioxidant

Uploaded by: ( Send Message ) on 09-11-2010.

Duration: 1m 49s

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