Saturday, November 1, 2008

Green Tea and Polyphenols

What are Polyphenols?
Polyphenols are compounds found in nature. More specifically they are found in plants and provide coloring for some. Their purpose appears to be a potent, natural antioxidant. There are many plants that we consume that contain polyphenols. Concentrations are high in Olive oil and Green Tea and have been the subject of many health articles and promoted to enhance your health.
How do Polyphenols work?
These antioxidants eliminate free radicals, unstable molecules that are the major cause of both aging and disease, in both plants and humans. Free radicals continually attack the body. Free radicals are a normal product of metabolism and result in a process called oxidation. Polyphenols and other antioxidants, including beta carotene (a vitamin A precursor), vitamin C, vitamin E, and selenium, scavenge these free radicals and help to prevent formation of unstable oxygen molecules, known as oxidation. Oxidation can damage healthy cells in the body and have been linked to many diseases including cancer, heart disease and stroke. Polyphenols not only work to prevent diseases but may also help to reduce abnormal cells and inflammation; get rid of cancer causing agents and restore cells back to normal health.
What foods contain Polyphenols?
Unfortunately, polyphenols have a quick life span (short half life) of about 3 hours, thus the scientific reason behind researchers' recommendation to drink green tea a minimum of 8 times a day. EGCG, the most abundant and powerful of green tea's 5 main catechins, is dubbed the 'super antioxidant' because it is 200 times more powerful than the popular antioxidant vitamin E. Just one example is a subgroup of polyphenols, exclusive to green tea, called catechins. These extremely high levels of polyphenols deliver green tea's unique results in several ways.

Green Tea is the #1 source of polyphenols. They include red wine, olive oil, black and green tea. There are many but there are only a few, which contain particularly high levels.
And, research at the University of Geneva, in Switzerland, indicate that green tea raises metabolic rates In addition to caffeine, green tea's catechin polyphenols raise thermogenesis (the rate at which calories are burned) and hence increases energy expenditure. And, research at the University of Geneva, in Switzerland, indicate that green tea raises metabolic rates and speed up fat oxidation. In addition to caffeine, green tea's catechin polyphenols raise thermogenesis (the rate at which calories are burned) and hence increases energy expenditure. And, research at the University of Geneva, in Switzerland, indicate that green tea raises metabolic rates and speed up fat oxidation.

In addition to caffeine, green tea's catechin polyphenols raise thermogenesis (the rate at which calories are burned) and hence increases energy expenditure. And, research at the University of Geneva, in Switzerland, indicate that green tea raises metabolic rates and speed up fat oxidation. In addition to caffeine, green tea's catechin polyphenols raise thermogenesis (the rate at which calories are burned) and hence increases energy expenditure. Not only may green tea protect and heal the body from disease but also clinical trials, conducted by the University of Geneva, in Switzerland, indicate that green tea raises metabolic rates and speed up fat oxidation.
Research is still continuing with green tea and more health benefits continue to be discovered. For instance, EGCG's may one day play a role in treatment of mad cow disease (Nature Structural and Molecular Biology, DOI:10.1038/nsmb743). And the formation of unstable oxygen molecules in the body is unavoidable. Aging, smoke, and environmental pollutants are all sources of the damaging free radicals. Japan and China have benefited from drinking green tea vs. black tea, like the rest of us, for centuries. The west is just now catching on to the benefits of green tea. With green tea being no more harmful than a cup of coffee (and actually containing less caffeine) there's no reason why you shouldn't begin today to benefit from green tea too.
Chemical name:
Various
Also known as:
Green Tea Polyphenols, Green Tea Water Extract, Black Tea Polyphenols, Black Tea Water Extract, Epigallocatechin Gallate (EGCG), Polyphenon E (Mitsui-Norin, Ltd.), Topical Polyphenon E (Epitome Pharmaceuticals Ltd.)
Category:
Phytochemical
More information on the benefits of green tea can be found at
http://www.natural-weight-loss-programs.com/greentea.htm
. Free trials of
green tea
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benefit of green tea
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1 comments:

jack

I heard about green tea is one of the most popular beverage worldwide particularly in Asian countries. It contains polyphenolic compounds which are antioxidant in nature. About my opinion, using the green tea externally can have a youthful effect on the skin.
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