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benefits of green tea:green tea diet, how many cups to drink per day
Two stages of cancer prevention with green tea
Source: J Cancer Res Clin Oncol 1999 Nov;125(11):589-97
     This is a research review paper on benefitial effects of green tea. (1) introduced the present status (1999) of clinical trials cancer prevention with green tea supported by the Chemoprevention Branch of the National Cancer Institute in the United States. (2) evidences of cancer prevention with green tea at gene level and cohort studies with over 8000 individuals. (3)for cancer treatment: to delay cancer onset, (green tea diet) at least 10 cups of green tea per day, for recurrence rate of stages I and II breast cancer patients, consumming 5 cups of green tea per day is lower than those taking less than 4 cups per day. (4)two-stage approach to analyzing cancer prevention with green tea is proposed
Green tea consumption and the risk of pancreatic and colorectal cancers
Source: Int J Cancer. 1997 Jan 27;70(3):255-8
     Benefits of gren tea in cancer prevention was examined via a large population-based case-control study, with cases of 931 colon cancer, 884 rectum cancer, 451 pancreas cancer, and 1552 controls in Shanghai, China. An inverse association with each cancer was observed with increasing amount of green tea consumption, with the strongest trends for rectal and pancreatic cancers. For men, compared with non-regular tea drinkers, odds among those in the highest tea consumption category (green tea diet, > or = 300 g/month) were 0.82 for colon cancer, 0.72 for rectal cancer and 0.63 for pancreatic cancer. For women, the respective odds for the highest consumption category (green tea diet > or = 200 g/month) were 0.67, 0.57 and 0.53. The findings provide further evidence that green tea drinking may lower the risk of colorectal and pancreatic cancers
Protective effect of green tea against prostate cancer: a case-control study in southeast China
Source: Int J Cancer. 2004 Jan 1;108(1):130-5
     A case-control study on protective effect of green tea against prostate cancer was carried out. Total of 404 patients were studied, among them, 130 cases of prostate cancer and 274 hospital inpatients without prostate cancer as contral group. Significant benefit of green tea against prostate cancer was found. The longer, and the more one drinks green tea, the less risk of getting prostate cancer. The odds ratio was 0.27 for those (green tea diet) drinking more than 3 cups (1 litre) of green tea daily compaired to non-tea drinkers, suggesting that green tea is protective against prostate cancer.
Preventive effects of drinking green tea on cancer and cardiovascular disease: epidemiological evidence for multiple targeting prevention.
Source: Biofactors. 2000;13(1-4):49-54
     The epidemiological study with 8552 general residents in Japan revealed: drinking green tea (1) decreased relative risk of cancer incidence by 43~46%. (2)decreased relative risk of death from cardiovascular disease by 28%. (3)the benefits of decreased risks were for those consuming (green tea diet) over 10 cups a day, compared with those consuming below 3 cups
Green tea consumption and chronic atrophic gastritis: a cross-sectional study in a green tea production village
Source: J Epidemiol 2000 Sep;10(5):310-6
     A cross-sectional study on 636 persons in Japan found: High green tea consumption ((green tea diet) more than 10 cups per day) significantly reduces risk of chronic atrophic gastritis with odds ratio of 0.63. These results support the hypothesis that high green tea consumption prevents chronic atrophic gastritis
Relation between green tea consumption and the severity of coronary atherosclerosis among Japanese men and women
Source: Ann Epidemiol 2000 Aug;10(6):401-8
     Study on 512 patients found: benefits in men but not in women, odds ratios of significant stenosis for consumption of green tea (green tea diet) 4 or more cups per day was 0.4 (95% confidence interval 0.2-0.9), as compared with a consumption of green tea one cup per day or less
Green tea consumption and serum lipid profiles: a cross-sectional study in northern Kyushu, Japan
Source: Prev Med. 1992 Jul;21(4):526-31
     Study of cross-sectional data on 1,306 males in Japan found: serum total cholesterol levels were inversely related to the consumption of green tea. Adjusted mean concentrations of total cholesterol were 8 mg/dl lower in men drinking (green tea diet) 9 or more cups of green tea per day than in those consuming 0 ~ 2 cups per day. 3 cups per day was the minimum for the green tea benefit.




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