Monday, December 29, 2008

Green Tea's antioxidant

By Collin James

I am sure by now you have heard all about the antioxidants found in green tea. But, do you know what antioxidants are or how they work. The quality of a antioxidant can help prevent harmful diseases such as cancer and heart disease. I suppose your wandering why anything that is anti-oxygen can be good for your body.

Antioxidants themselves don't do anything to oxygen. What they do, do is fight a chemical reaction in your body called oxidation. I am sure your saying right now, wait a second - that's what causes metal to rust - I am not made of metal! Your right to say that but oxidation is the interaction between oxygen molecules and the substances they come in contact with. If this just so happens to be living tissue, then that's when disease occurs.

The harm caused by oxidation, is result of free radicals, highly reactive, unstable molecules that travel around the body wreaking havoc. Although free radicals can be generated by exposure to UV rays, toxins, cigarette smoke, microbes and other sources, the most common source is the oxygen molecule itself.

Oxygen typically travels throughout the body in pairs, and these two molecules share electrons. But sometimes this double molecule splits into two separate oxygen molecules called singlet oxygen. When this happens, there are no longer enough electrons to go around, so each oxygen molecule ends up one electron short. This destabilizes the molecule, in a sense throwing it off balance. In order too stabilize itself, it races off throughout the body in search of another electron.

The molecule does not just wait for a spare electron to pop up, but what it does is it steals one from another molecule. The problem keeps reoccurring over and over again. The process is what causes cells to be damaged, and the entire body system gets effected by it. This is believed to be the major cause of cancer, heart disease and aging.

Antioxidants work against "electron stealing" by neutralizing and stabilizing free radicals. They do this by donating an electron so that singlet oxygen and other free radicals no longer have the urge to "steal." And while the body does produce a certain amount of antioxidants for the express purpose of taking care of such problems, it also needs the added help of antioxidants found in foods.

Among others, these include beta-carotene, vitamins C and E, the mineral selenium, and various phytochemicals such as lycopene and quercetin. But the catechins, especially EGCg, are among the most powerful and effective antioxidants of all. - 16463

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