Document Detail


Tea and lycopene protect against prostate cancer.
MedLine Citation:
PMID:  17392149     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Prostate cancer is the most common male cancer in developed countries and is increasing in the developing world. Its long latency and geographical variation suggest the possibility of prevention or postponement of onset by dietary modification. To investigate the possible joint effect of lycopene and green tea on prostate cancer risk, a case-control study was conducted in Hangzhou, China, with 130 prostate cancer patients and 274 hospital controls. Information on tea and dietary intakes, and possible confounders was collected using a structured questionnaire. The risk of prostate cancer for the intake of tea and lycopene and their joint effect were assessed using multivariate logistic regression models. Prostate cancer risk was reduced with increased consumption of green tea. The protective effect of green tea was significant (odds ratio 0.14, 95% CI: 0.06-0.35) for the highest quartile relative to the lowest after adjusting for total vegetables and fruits intakes and other potential confounding factors. Intakes of vegetables and fruits rich in lycopene were also inversely associated with prostate cancer risk (odds ratio 0.18, 95% CI 0.08-0.39). Interaction analysis showed that the protective effect from tea and lycopene consumption was synergistic (p<0.01). This study suggests that habitual drinking tea and intakes of vegetables and fruits rich in lycopene could lead to a reduced risk of prostate cancer in Chinese men. Together they have a stronger preventive effect than either component taken separately. This is the first epidemiological study to investigate the joint effect between tea drinking and lycopene intake.
Authors:
Le Jian; Andy H Lee; Colin W Binns
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Asia Pacific journal of clinical nutrition     Volume:  16 Suppl 1     ISSN:  0964-7058     ISO Abbreviation:  Asia Pac J Clin Nutr     Publication Date:  2007  
Date Detail:
Created Date:  2007-03-29     Completed Date:  2007-06-14     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  9440304     Medline TA:  Asia Pac J Clin Nutr     Country:  Australia    
Other Details:
Languages:  eng     Pagination:  453-7     Citation Subset:  IM    
Affiliation:
School of Public Health, Curtin University of Technology, GPO Box U 1987, Perth, WA 6845, Australia. L.Jian@exchange.curtin.edu.au
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MeSH Terms
Descriptor/Qualifier:
Aged
Carotenoids / administration & dosage*
Case-Control Studies
China / epidemiology
Diet Surveys
Drinking
Food Habits
Fruit
Humans
Logistic Models
Male
Middle Aged
Multivariate Analysis
Prostatic Neoplasms / epidemiology,  etiology,  prevention & control*
Questionnaires
Risk Factors
Tea*
Vegetables
Chemical
Reg. No./Substance:
0/Tea; 36-88-4/Carotenoids; 502-65-8/lycopene

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