The Correlation between Free Radicals and Aging

Published: 12th August 2010
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Until recently, the process of aging has been a mystery for both medical professionals and scientists. The process, occurring to both living and non-living organisms, has always posted many questions regarding the cycle of life. True enough, the process of decay occurring to both animate and inanimate objects, although natural and inevitable is something that was worth the study. Learning the science behind the deterioration was thought to be the key to a pool of knowledge and answers about life, living and death. However, after years of research and countless experiments, it was discovered that aging was not as mysterious as it was first perceived.

Modern science tells that the root cause of aging and decay are organic molecules called free radicals. These unstable molecules are always looking to bond with others. In the process, they destroy their target molecule's vigor and brings on decay, by causing damage at the cellular and tissue level which eventually causes the organism to succumb with enough time.

Free radicals were termed as such for they are considered 'free' because they float around until they stabilize, and 'radical' in the sense that they are surrounded by a myriad of molecules from which they can obtain an electron. These unstable molecules existed not having an even number of electrons and therefore are in constant search for extra electron they can "steal" to become stable. It must be properly noted that free radicals are like thieves and react quickly to the compounds around them.

On a wider level, this perpetuation doesn't stop at the molecules. In effect, if a free radical starts the chain reaction, the tissue itself ends up as a free radical once enough molecules are affected. The snowball effect piles on and on, as the affected tissue wreaks havoc on in its nearby counterparts. Eventually, larger and larger areas are impacted.

Some free radicals come about because of metabolism. There are also times when the body's immune system creates them to envelope and neutralize foreign bodies like viruses and bacteria. What is certain is that free radicals are caused by many factors that are a part of our daily lives, hence they are always a constant presence. In recent years, however, scientists have discovered that changing conditions have accelerated their numbers. Factors such as exposure to pollution, cigarette smoking, alcohol, radiation and preservatives in processed food are to be blame. In addition, chemicals found in herbicides and other household products contain the primary substances that give rise to these harmful molecules.

As free radicals have been around for a long time, the body can handle it under normal conditions. The damage primarily happens when antioxidants, the molecules that fight free radicals by donating electrons, become scarce or unavailable due to the above factors. Conversely, free radical production may also become excessive, overwhelming the antioxidants and dooming the tissues and body with time.

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