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Green tea and the health benefits of drinking green tea, especially cancer prevention...Green tea and its cancer prevention benefits are only one of the reasons this popular beverage should be enjoyed. The benefits of green tea are proven by clinical studies and extend to a variety of health issues. The article below describes very well important health benefits associated with drinking green tea. Enjoy!
Benefits of Green Tea and Cancer PreventionBy Robert Rogers
Tea drinking is an ancient tradition dating back 5,000 years in China and India. Long regarded in those cultures as an aid to good health, researchers now are studying tea for possible use in the prevention and treatment of a variety of cancers. Investigators are especially interested in the antioxidants - called catechins - found in tea.
The human body constantly produces unstable molecules called oxidants, also commonly referred to as free radicals. To become stable, oxidants steal electrons from other molecules and, in the process, damage cell proteins and genetic material. This damage may leave the cell vulnerable to cancer. Antioxidants are substances that allow the human body to scavenge and seize oxidants. Like other antioxidants, the catechins found in tea selectively inhibit specific enzyme activities that lead to cancer. They may also target and repair DNA aberrations caused by oxidants. 2. What is the level of antioxidants found in tea? All varieties of tea come from the leaves of a single evergreen plant, Camellia sinensis. All tea leaves are picked, rolled, dried and heated. With the additional process of allowing the leaves to ferment and oxidize, black tea is produced. Possibly because it is less processed, green tea contains higher levels of antioxidants than black tea. Although tea is consumed in a variety of ways and varies in its chemical makeup, one study showed steeping either green or black tea for about five minutes released over 80 percent of its catechins. Instant iced tea, on the other hand, contains negligible amounts of catechins. 3. What are the laboratory findings? In the laboratory, studies have shown tea catechins act as powerful inhibitors of cancer growth in several ways: They scavenge oxidants before cell injuries occur, reduce the incidence and size of chemically induced tumors and inhibit the growth of tumor cells. In studies of liver, skin and stomach cancer, chemically induced tumors were shown to decrease in size in mice that were fed green and black tea. 4. What are the results of human studies? Although tea has long been identified as an antioxidant in the laboratory, study results involving humans have been contradictory. Some epidemiological studies comparing tea drinkers to non-tea drinkers support the claim that drinking tea prevents cancer, others do not. Dietary, environmental and population differences may account for these inconsistencies. Two studies in China, where green tea is a mainstay of the diet, resulted in promising findings. One study involving over 18,000 men found tea drinkers were about half as likely to develop stomach or esophageal cancer as men who drank little tea, even after adjusting for smoking and other health and diet factors. A second study at the Beijing Dental Hospital found consuming 3 grams of tea a day, or about 2 cups, along with the application of a tea extract reduced the size and proliferation of leukoplakia, a precancerous oral plaque. 5. Is NCI evaluating tea?
National Cancer Institute (NCI) researchers are also investigating the therapeutic use of green tea. One recently completed but unpublished NCI trial studied the antitumor effect of green tea among prostate cancer patients. The 42 patients drank 6 grams of green tea, or about 4 cups, daily for four months. However, only one patient experienced a short-lived improvement, and nearly 70 percent of the group experienced unpleasant side effects such as nausea and diarrhea. The study concluded drinking green tea has limited antitumor benefit for prostate cancer patients. Other ongoing NCI studies are testing green tea as a preventive agent against skin cancer. For example, one is investigating the protective effects of a pill form of green tea against sun-induced skin damage while another explores the topical application of green tea in shrinking precancerous skin changes. Robert is a writer in the Washington DC area and specializes in health and fitness. Visit pcshealth.com for more articles and research on green tea.
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Golden Green Tea helps maintain a healthy cholesterol level because it contains Chinese green tea leaf uniquely blended with lemongrass leaf for flavor and balance. Tea is the most widely consumed beverage in the world and has a long history of safe and beneficial use through many cultures - green tea. Traditionally, green tea is considered a digestive aid, assisting in dissolving fats. Modern studies have found that regular consumption of green tea is beneficial in helping to regulate LDL and HDL cholesterol levels.
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Green tea contains antioxidants, a modern term for the health guardians of the body. Antioxidants help to prevent free radicals from weakening our cells and are considered important in the anti-aging process. Green tea is the subject of exciting scientific research, which, among other things, has shown it's antioxidant activity to be six times greater than that of black tea.
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1. What are antioxidants?
