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What is anti-oxidant and free radicals Anti-oxidants fight free radicals. So what are free radicals? Free radicals play an important role, in both health and disease, and have been implicated in countless human disease processes. Free radicals are vital to human health. These molecules (Reactive Oxidant Species) are extremely important to human metabolic processes. Any molecule can become a free radical by either losing or gaining an electron and molecules containing these uncoupled electrons are very reactive. Once free radicals are initiated, they can propagate by becoming involved in chain reactions with other less reactive types. The resulting chain reaction compounds generally survive longer in the body and therefore increase the potential for cellular damage. A free radical has three stages: the initiation stage, propagation and finally, termination. They are terminated or neutralized, by nutrient antioxidants, enzymatic mechanisms, or by recombining with each other. The aim is to attain a delicate balance between free radical activity and optimum antioxidant activity, thereby achieving a state of balance (homeostasis). The three known free radicals are hydroxyl, superoxide and peroxide. If they are not neutralized into "good oxygen", free radicals can speed up the aging process and play a major part in the development of degenerative and/or chronic diseases. (Free-radical damage. Created by normal body functions, free radicals
are unstable molecules that can damage cells and cell DNA. Doctors know
from autopsy evidence that brain cells are particularly vulnerable. Researchers
have tested the effect of a variety of so-called antioxidants--which neutralize
free radicals--with mixed results. A substance called curcumin (from the
herb turmeric) significantly improves brain function in animals with memory
deficits, Cole said; so do preparations that include alpha-lipoic acid
and vitamins C and E, to name a few.)
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