This leads to a decrease in the blood supply to the organs and tissues, with the consequent decrease in tissue perfusion. To counteract the accumulation of cytotoxic bioproducts derived from the oxidative reactions necessary for life, living organisms have developed processes of detoxification, DNA repair, and natural antioxidants, free radical scavengers, enzymes and protein degradation systems.20
The degenerative processes associated with age are partly the result of damage not repaired to macromolecules produced by free radicals nulante. 2-5% of the inhaled oxygen is converted into toxic oxygen radicals.
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