The article below reporting the health benefits of green tea against cancer.
Department of Welfare and Labor in Japan released research paper that shows the relation of green tea and prostate cancer. The study said that the risk of prostate cancer became half with the male who drinks 5 cup of green tea every day compare with non green tea drinkers.
According to National Cancer Center of Japan, the research team surveyed 49,220 males aged 40 to 69 in 1990 and 1993, then, continued tracking those respondents up to 2004. During this period, 404 people had developed prostate cancer, among them, 114 were progressive prostate cancer, and 271 were non pregressive prostate cancer, and 19 could not be identified progressive or not.
During the research, male who drinks more than 5 cups of green tea a day had risk of 50% lower than non drinker, in terms of progressive prostate cancer.
The study team concluded that green tea and risk of prostate cancer have correlation. The study team discussed that catechin in green tea controls male hormone, testosterone, which is risk factor of prostate cancer, and lowers the risk.
The rate of prostate cancer in Asia is much lower than that of U.S. and other European regions. This is considered due to benefits of green tea.
Another study showed that the rate of death due to cancer in Shizoka prefecture, where the people drink green tea much more than other area, are significantly smaller than other area in Japan. The ratio of stomach cancer in Municipal Nakagawane in Shizuoka is only 1/5 of the average in Japan. Another study showed, in statistical data of Saitama prefecture, the ratio of cancer who drinks 10 cups of green tea every day is 40% smaller compared to the people who do not.
Many studies on health benefits of green tea against cancer have been reported. However, much more studies are expected to make clear the benefits of green tea on prevention of cancers.
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