[Paracelsus] Tea Consumption and Ovarian Cancer Risk (fwd)

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Subject: [Paracelsus] Tea Consumption and Ovarian Cancer Risk

Larsson SC, Wolk A. Tea Consumption and Ovarian

Cancer Risk in a Population-Based Cohort. Arch

Intern Med 2005;165:2683-2686.

http://archinte.ama-assn.org/cgi/content/abstract/165/22/2683

http://archinte.ama-assn.org/cgi/content/full/165/22/2683

http://archinte.ama-assn.org/cgi/reprint/165/22/2683

Original Investigation

Tea Consumption and Ovarian Cancer Risk in a Population-Based Cohort

na C. Larsson, MSc; Alicja Wolk, DMSc

Arch Intern Med. 2005;165:2683-2686.

Background Substantial evidence from laboratory

studies indicates that green and black tea

preparations may protect against various cancers.

Few epidemiologic studies, however, have examined

the relationship specifically between tea

consumption and risk of ovarian cancer.

Methods We prospectively examined the

association between tea consumption and risk of

ovarian cancer in 61 057 women aged 40 to 76

years who were participants in the

population-based Swedish Mammography Cohort.

Participants completed a validated 67-item food

frequency questionnaire at enrollment between

1987 and 1990 and were followed for cancer

incidence through December 2004.

Results During an average follow-up of 15.1

years, 301 incident cases of invasive epithelial

ovarian cancer were ascertained. Tea consumption

was inversely associated with the risk of ovarian

cancer after controlling for potential

confounders (P for trend, .03). Compared with

women who never or seldom (less than monthly)

consumed tea, the multivariate hazard ratios for

those who consumed less than 1 cup per day, 1 cup

per day, and 2 or more cups per day were 0.82

(95% confidence interval [CI], 0.62-1.08), 0.76

(95% CI, 0.56-1.04), and 0.54 (95% CI,

0.31-0.91), respectively. Each additional cup of

tea per day was associated with an 18% lower risk

of ovarian cancer (multivariate hazard ratio,

0.82; 95% CI, 0.68-0.99).

Conclusion These results suggest that tea

consumption is associated with a reduced risk of

epithelial ovarian cancer in a dose-response

manner.

Author Affiliations: Division of Nutritional

Epidemiology, The National Institute of

Environmental Medicine, Karolinska Institutet,

Stockholm, Sweden.

© 2005 American Medical Association. .

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