A dose of 5 or 10 mg/ kg body weight/day can be effective.
Tannin is hydrolyzed releases some antioxidants like catechin, epicatechin, catechin gallate, gallic acid, ellagic acid etc., which have therapeutic values.
These metabolites have certain properties like hypocholesterolemic, hypoglycemic, anti-oxidative, anti-carcinogenic, anti-atherogenic, anti-obesity, and immuno-stimulatory. These metabolites have been proved to be quite useful from human health point of view
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There are as many answers to this question as there are researchers investigating the natural properties of green tea. A Japanese report stating that men who drank ten cups of green tea per day stayed cancer-free for three years longer than men who drank less than three cups a day (there are approximately 240 - 320 mg of polyphenols in three cups of green tea). A study by Cleveland's Western Reserve University concluded that drinking four or more cups of green tea per day could help prevent rheumatoid arthritis, or reduce symptoms in individuals already suffering from the disease. Japanese scientists at the Saitama Cancer Research Institute discovered that there were fewer recurrances of breast cancer, and the disease spread less quickly, in women with a history of drinking five cups or more of green tea daily.
A University of California study on the cancer-preventative qualities of green tea concluded that you could probably attain the desired level of polyphenols by drinking m