The Free Radical Theory of Aging

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The picture above shows iron rust. Oxygen reacts with steel, in a process called oxidation. It gives a grey and red color, and soon, steel disintegrate. The process can be accelerated with air or water moisture.

Oxidation can also been seen in food, turning rancid cooking oils or transforming nice apples into sad brown food. This process of oxidation creates free radicals.

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