Preventive effects of drinking green tea on cancer and cardiovascular disease: epidemiological evidence for multiple targeting prevention.
The significance of drinking green tea in prevention of two of the main lifestyle-related diseases, cancer and cardiovascular disease, was demonstrated in terms of a prospective cohort study on a total of 8,552 general residents in Saitama Prefecture, Japan. On the basis of the follow-up study, we revealed decreased relative risk of cancer incidence for those consuming over 10 cups a day, compared with those consuming below 3 cups: 0.54 (95% confidence interval, 0.22-1.34) for men, 0.57 (0.34-0.98) for women, and 0.59 (0.35-0.98) for both sexes. Furthermore, a significant delay in cancer onset was associated with increased consumption of green tea. Next, decreased relative risk of death from cardiovascular disease was 0.58 (0.34-0.99) for men, 0.82 (0.49-1.38) for women, and 0.72 (0.60-1.04) for members of both sexes consuming over 10 cups a day. Finally, we evaluated the life-prolonging effects of drinking green tea on cumulative survival, using the life table.
Saitama Cancer Center Research Institute, Ina, Japan. nakachi@qb3.so-net.or.jp
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Nakachi
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Matsuyama
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Miyake
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Suganuma
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Imai
D000328:Adult; D017668:Age of Onset; D000368:Aged; D000369:Aged, 80 and over; D016588:Anticarcinogenic Agents; D002318:Cardiovascular Diseases / Q000453:epidemiology / Q000517:prevention & control*; D015331:Cohort Studies; D016001:Confidence Intervals; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D015994:Incidence; D007564:Japan / Q000453:epidemiology; D008019:Life Style; D008297:Male; D008875:Middle Aged; D009369:Neoplasms / Q000453:epidemiology / Q000517:prevention & control*; D012306:Risk; D012307:Risk Factors; D012907:Smoking; D011795:Surveys and Questionnaires; D013662:Tea; D013997:Time Factors
D016588:Anticarcinogenic Agents; D013662:Tea