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Tea consumption and the reduced risk of colon cancer – results from a national prospective cohort study
- Source :
- Public Health Nutrition. 5:419-425
- Publication Year :
- 2002
- Publisher :
- Cambridge University Press (CUP), 2002.
-
Abstract
- Objective:This study examines the relationship between tea consumption and colon cancer risk in the US population.Design:Data from the NHANES I Epidemiologic Follow-up study (NHEFS) were used to examine the hypothesis. Cox proportional hazard models were used to examine the hypothesis of a protective effect of frequent tea consumption on colon cancer occurrence.Setting:Due to differences in the precision of the exposure data, we analysed two cohort periods based on the NHEFS. Cohort I was based on the survey conducted at the NHEFS baseline and Cohort II began at the first follow-up.Subjects:After excluding non-incidence cases and cases lost to follow-ups, there were 2359 tea users and 6498 non-tea users at baseline and 7656 tea users and 4514 non-tea users at the first follow-up.Results:After adjusting for confounders, the relative risks of colon cancer are 0.57 (95% confidence interval (CI) 0.42, 0.78) and 0.59 (95% CI = 0.35, 1.00) for subjects who consumed ≤1.5 cups and ≥1.5 cups per day, respectively, compared with non-tea users in Cohort II. Although more women consumed tea and the mean intake was higher, the preventive effect of tea consumption on colon cancer was found predominantly in men. The relative risks of colon cancer are 0.41 (95% CI = 0.25, 0.66) for men who consumed ≤1.5 cups day-1 and 0.30 (95% CI = 0.09, 0.98) for >1.5 cups day-1 of tea consumption (P-value for trend Conclusions:This study suggests an inverse association between colon cancer risk and habitual tea consumption.
- Subjects :
- Adult
Male
Risk
medicine.medical_specialty
Colorectal cancer
Medicine (miscellaneous)
Cohort Studies
Internal medicine
medicine
Humans
Prospective Studies
Tea consumption
Prospective cohort study
Aged
Nutrition and Dietetics
Tea
business.industry
Confounding
Public Health, Environmental and Occupational Health
Middle Aged
medicine.disease
Diet Records
United States
Confidence interval
Relative risk
Colonic Neoplasms
Cohort
Female
business
Cohort study
Subjects
Details
- ISSN :
- 14752727 and 13689800
- Volume :
- 5
- Database :
- OpenAIRE
- Journal :
- Public Health Nutrition
- Accession number :
- edsair.doi.dedup.....665e3ec9912a73da0bda0b264bf41194