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| Science Forum Index » Life Extension Forum » Green tea fights blood and liver cancer, as well as... |
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| vauxall... |
 Posted: Mon Nov 02, 2009 4:20 pm |
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http://www.ncbi.nlm.nih.gov/pubmed/19640889
Am J Epidemiol. 2009 Sep 15;170(6):730-8. Epub 2009 Jul 29.
Green tea consumption and hematologic malignancies in Japan: the
Ohsaki study.
Naganuma T, Kuriyama S, Kakizaki M, Sone T, Nakaya N, Ohmori-Matsuda
K, Hozawa A, Nishino Y, Tsuji I.
Division of Epidemiology, Department of Public Health and Forensic
Medicine, Tohoku University School of Medicine, Miyagi, Japan.
a4mb1075-thk at (no spam) umin.ac.jp
Several biologic studies have reported that green tea constituents
have antitumor effects on hematologic malignancies. However, the
effects in humans are uncertain. The authors used data from the Ohsaki
National Health Insurance Cohort Study in Japan to evaluate the
association between green tea consumption and the risk of hematologic
malignancies. Study participants were 41,761 Japanese adults aged 40-
79 years without a history of cancer at baseline who answered a food
frequency questionnaire survey in 1994. During 9 years of follow-up
beginning in 1995, the authors documented 157 hematologic
malignancies, including 119 cases of lymphoid neoplasms and 36 cases
of myeloid neoplasms. Hazard ratios were calculated by using the Cox
proportional hazards regression model. Risk of hematologic
malignancies was inversely associated with green tea consumption. The
multivariate-adjusted hazard ratio of hematologic malignancies for 5
cups/day or more compared with less than 1 cup/day of green tea was
0.58 (95% confidence interval: 0.37, 0.89). The corresponding risk
estimate was 0.52 (95% confidence interval: 0.31, 0.87) for lymphoid
neoplasms and 0.76 (95% confidence interval: 0.32, 1.7 for myeloid
neoplasms. This inverse association was consistent across sex and body
mass index strata. In conclusion, green tea consumption was associated
with a lower risk of hematologic malignancies.
PMID: 19640889 [PubMed - indexed for MEDLINE] |
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