Well, this may be a long post, but here goes...
Historical or traditional use (may or may not be supported by scientific studies)
According to Chinese legend, tea was discovered accidentally by an emperor 4,000 years ago. Since then, Traditional Chinese Medicine has recommended green tea for headaches, body aches and pains, digestion, depression, immune enhancement, detoxification, as an energizer, and to prolong life.
Active constituents
Green tea contains volatile oils, vitamins, minerals, and caffeine, but the primary constituents of interest are the polyphenols, particularly the catechin called epigallocatechin gallate (EGCG). The polyphenols are believed to be responsible for most of green tea’s roles in promoting good health.1
Green tea has been shown to mildly lower total cholesterol levels and improve the cholesterol profile (decreasing LDL “bad” cholesterol and increasing HDL “good” cholesterol) in most,2 3 4 5 but not all,6 studies. Green tea may also promote cardiovascular health by making platelets in the blood less sticky.
Green tea has also been shown to protect against damage to LDL (“bad”) cholesterol caused by oxygen.7 Consumption of green tea increases antioxidant activity in the blood.8 Oxidative damage to LDL can promote atherosclerosis. While population studies have suggested that consumption of green tea is associated with protection against atherosclerosis,9 the evidence is still preliminary.
Several animal and test tube studies have demonstrated an anticancer effect of polyphenols from green tea.10 11 12 In one of these studies, a polyphenol called catechin from green tea effectively inhibited metastasis (uncontrolled spread) of melanoma (skin cancer) cells.13 The polyphenols in green tea have also been associated with reduced risk of several types of cancer in humans.14 15 16 However, some human studies have found no association between green tea consumption and decreased cancer risk.17 18
2006-07-24 07:54:15
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answer #1
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answered by CigarMe 3
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what was your question? I would like to help you... I get migraines.
2006-07-24 14:52:04
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answer #2
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answered by Medical Assistant 4
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