Green tea originates from China and has become associated with many cultures in Asia from Japan to the Middle East. They have known about the medicinal benefits of green tea since ancient times, using it to treat everything from headaches to depression.
Highly content of Antioxidants in Green tea, Antioxidants are associated with numerous health benefits. Normal cellular processes as well as environmental factors result in the natural formation of harmful molecules called free radicals in the body. Antioxidants inhibit the harmful effects of these free radicals, preventing damage to healthy cells and tissues.
Black tea, although made from the same plant called Camellia sinesis, is not believed to have the same properties because the leaves are processed differently.
Black tea leaves go through a fermentation process that strips the plant of its natural polyphenol compounds.
Green Tea, What experts saying about ?
Today, scientific research providing hard evidence for the health benefits long associated with drinking green tea. For example, in 1994 the Journal of the National Cancer Institute published the results of an epidemiological study indicating that drinking green tea reduced the risk of esophageal.
According to research reported at the Sixth International Conference on Frontiers in Cancer Prevention, sponsored by the American Association for Cancer Research, a standardized green tea polyphenol preparation (Polyphenon E) limits the growth of colorectal tumors.
A journal of the American Medical Association concluded "Green tea consumption is associated with reduced mortality due to all causes and due to cardiovascular disease but not with reduced mortality due to cancer.
And also the study by the Tohoku University School of Policy in Japan followed 40,530 Japanese adults, ages 40–79, with no history of stroke, coronary heart disease, or cancer at baseline beginning in 1994. The study followed all participants for up to 11 years for death from all causes and for up to 7 years for death from a specific cause. Participants who consumed 5 or more cups of tea per day had a 16 percent lower risk of all-cause mortality and a 26 percent lower risk of cardiovascular disease ("CVD") than participants who consumed less than one cup of tea per day. The study also states, "If green tea does protect humans against CVD or cancer, it is expected that consumption of this beverage would substantially contribute to the prolonging of life expectancy, given that CVD and cancer are the two leading causes of death worldwide."
Green tea's ability to fight cancer is even more potent and varied than scientists suspected, say researchers who have discovered that chemicals in green tea shut down one of the key molecules that tobacco relies upon to cause cancer. It's a find that could help explain why people who drink green tea are less likely to develop cancer. The finding by scientists at the University of Rochester's Environmental Health Science Center appears in the July 21 issue of Chemical Research in Toxicology, published by the American Chemical Society.
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