Consumption of black tea or coffee and risk of ovarian cancer

Baker, Julie; Boakye, K.; McCann, Susan E.; Beehler, Gregory P.; Rodabaugh, Kerry J.; Villella, Jeannine; Moysich, Kirsten B.

doi:10.1111/j.1525-1438.2006.00773.x

Cited by 60 publications

(42 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Some prior studies did not distinguish between caffeinated and decaffeinated forms of coffee (9)(10)(11)14) or between brewed and instant preparation methods (5,(8)(9)(10)(11)15). Although the frequency of coffee drinking varied between populations, most studies were able to assess risk among women with substantial daily exposure, with the upper exposure category ranging from z1 in the study of Goodman et al (8) to z3 in the current study to z4 in most other studies.…”

Section: Discussionmentioning

confidence: 78%

“…Among studies published since 2000, positive (5,8,14), inverse (10), and null (6,9,11,15) findings have been reported. Of studies reporting an increased risk, one reported an increase only among premenopausal women (5), another reported an overall increase in a predominantly postmenopausal population (8), and the third observed an increased risk in a cohort of whom roughly half of participants were postmenopausal (14).…”

Section: Discussionmentioning

confidence: 99%

“…A meta-analysis based on studies published through 1990 found a 30% increased risk of ovarian cancer among coffee drinkers compared with nondrinkers (4). Since that time, numerous additional studies have examined the relation of risk with intake of caffeinated beverages, including coffee, tea, and carbonated soft drinks, as well as total caffeine intake and have reported positive, inverse, and null results (5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15). The reasons for these inconsistent results are unclear but may be related to incomplete or nonspecific assessment of multiple caffeine-containing beverages as well as differences in beverage consumption patterns across study populations.…”

Section: Introductionmentioning

confidence: 94%

See 2 more Smart Citations

Coffee, Tea, Colas, and Risk of Epithelial Ovarian Cancer

Song

Kristal

Wicklund

et al. 2008

Cancer Epidemiology, Biomarkers &Amp; Prevention

View full text Add to dashboard Cite

Associations of coffee, tea, and other caffeinated beverages with ovarian cancer risk remain uncertain. In a population-based study in Washington State, 781 women with epithelial ovarian cancer diagnosed in 2002 to 2005 and 1,263 controls completed selfadministered questionnaires detailing consumption of caffeinated and noncaffeinated coffee, teas, and colas and in-person interviews regarding reproductive and hormonal exposures. We assessed risk associated with coffee, tea, and cola drinking and with total caffeine consumption using logistic regression to calculate odds ratios and 95% confidence intervals. Neither caffeinated nor decaffeinated coffees were associated with ovarian cancer risk; also, we observed no association of total caffeine with risk using a combined index that summed intake from coffee, tea, and carbonated soft drinks. Among teas, neither herbal/decaffeinated nor black teas were associated with risk; however, women who reported drinking z1 cup/d of green tea had a 54% reduction in risk (P trend = 0.01). Associations of green tea with risk were similar when invasive and borderline cases were considered separately and when Asian women were excluded from analysis. Green tea, which is commonly consumed in countries with low ovarian cancer incidence, should be further investigated for its cancer prevention properties. (Cancer Epidemiol Biomarkers Prev 2008;17(3):712 -6)

show abstract

Section: Discussionmentioning

confidence: 78%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 94%

See 1 more Smart Citation

Coffee, Tea, Colas, and Risk of Epithelial Ovarian Cancer

Song

Kristal

Wicklund

et al. 2008

Cancer Epidemiology, Biomarkers &Amp; Prevention

View full text Add to dashboard Cite

show abstract

“…Additional studies have evaluated the association between flavonoid-rich foods and beverages and ovarian cancer risk. 10, Although some studies have found inverse associations with consumption of certain vegetables and fruits, tea and other dietary sources of flavonoids, 22,[26][27][28]31,33,39,42,45 overall the data are equivocal. The same flavonoid can be present in multiple foods and beverages, which suggests that an association between flavonoid intake and ovarian cancer risk could exist despite the absence of a clear association with consumption of certain flavonoid-rich foods.…”

Section: Discussionmentioning

confidence: 99%

A prospective study of dietary flavonoid intake and incidence of epithelial ovarian cancer

Gates

Tworoger

Hecht

et al. 2007

Intl Journal of Cancer

257

168

View full text Add to dashboard Cite

Flavonoids are antioxidant compounds found in plants, including fruits, vegetables and tea. No prior prospective studies have examined the association between intake of flavonoids in the flavonol and flavone subclasses and ovarian cancer risk. We analyzed the association between intake of 5 common dietary flavonoids and incidence of epithelial ovarian cancer among 66,940 women in the Nurses' Health Study. We calculated each participant's intake of myricetin, kaempferol, quercetin, luteolin and apigenin from dietary data collected at multiple time points, and used Cox proportional hazards regression to model the incidence rate ratio (RR) of ovarian cancer for each quintile of intake. Our analysis included 347 cases diagnosed between 1984 and 2002, and 950,347 personyears of follow-up. There was no clear association between total intake of the 5 flavonoids examined and incidence of ovarian cancer (RR 5 0.75 for the highest versus lowest quintile, 95% confidence interval [CI] 5 0.51-1.09). However, there was a significant 40% decrease in ovarian cancer incidence for the highest versus lowest quintile of kaempferol intake (RR 5 0.60, 95% CI 5 0.42-0.87; p-trend 5 0.002), and a significant 34% decrease in incidence for the highest versus lowest quintile of luteolin intake (RR 5 0.66, 95% CI 5 0.49-0.91; p-trend 5 0.01). There was evidence of an inverse association with consumption of tea (nonherbal) and broccoli, the primary contributors to kaempferol intake in our population. These data suggest that dietary intake of certain flavonoids may reduce ovarian cancer risk, although additional prospective studies are needed to further evaluate this association. If confirmed, these results would provide an important target for ovarian cancer prevention. ' 2007 Wiley-Liss, Inc.Key words: flavonoids; flavonols; flavones; diet; ovarian cancer There are few lifestyle factors known to reduce ovarian cancer risk, and no dietary exposure, with the possible exception of lactose, 1 has been clearly associated with risk. Flavonoids are polyphenol chemicals found naturally in fruits, vegetables, tea and other plant-derived foods and beverages. Experimental evidence suggests that flavonoids have several potential anticarcinogenic characteristics, including antioxidant, antiestrogenic, antiproliferative and antiinflammatory properties. [2][3][4][5] Flavonoids are defined by their chemical structure, which includes 2 aromatic rings (the ''A'' and ''B'' rings) linked by a three-carbon bridge that comprises part of a third six-member ''C'' ring. 6 There are over 5,000 individual flavonoid compounds and at least 10 subclasses of flavonoids, which are characterized further by the structure of the C ring and the connection of the B and C rings. 2,6,7 Flavonoids from 6 of these subclasses-flavones, flavonols, flavanols (catechins), flavanones, isoflavones and anthocyanidins-are common in the human diet. 2,7 Three studies have previously evaluated the association between dietary flavonoid intake and ovarian cancer risk. [8][9][10] However, only...

show abstract

“…On tea drinking and ovarian cancer, eight casecontrol studies (Byers et al, 1983;Miller et al, 1987;La Vecchia et al, 1992;Kuper et al, 2000;Tavani et al, 2001;Zhang et al, 2002;Jordan et al, 2004;Baker et al, 2007) and, including this study, five cohort studies (Zheng et al, 1996;Larsson and Wolk, 2005b;Gates et al, 2007;Silvera et al, 2007) have been conducted. Coffee drinking and ovarian cancer risk was investigated in 16 case-control studies (Trichopoulos et al, 1981;Hartge et al, 1982;Byers et al, 1983;Cramer et al, 1984;La Vecchia et al, 1984;Tzonou et al, 1984;Miller et al, 1987;Whittemore et al, 1988;Polychronopoulou et al, 1993;Kuper et al, 2000;Tavani et al, 2001;Jordan et al, 2004;Riman et al, 2004;Baker et al, 2007) and, including this study, five cohort studies (Snowdon and Phillips, 1984;Stensvold and Jacobsen, 1994;Larsson and Wolk, 2005a;Silvera et al, 2007). We had to exclude from the meta-analysis studies that did not report 95% CIs (Trichopoulos et al, 1981;Byers et al, 1983;Cramer et al, 1984;Tzonou et al, 1984;Stensvold and Jacobsen, 1994).…”

Section: Meta-analysismentioning

confidence: 99%

Tea and coffee drinking and ovarian cancer risk: results from the Netherlands Cohort Study and a meta-analysis

et al. 2007

View full text Add to dashboard Cite

In a cohort study, ovarian cancer (280 cases) showed no significant association with tea or coffee, the multivariable rate ratios being 0.94 (95% confidence interval (CI): 0.89, 1.00) and 1.04 (95% CI: 0.97, 1.12) per cup per day, respectively. A meta-analysis also produced no significant findings overall, though the cohort studies showed a significant inverse association for tea. British Journal of Cancer (2007) Tea and coffee are widely consumed around the world and may affect human health. Several case-control and cohort studies have analysed the relationship with ovarian cancer risk, yielding inconclusive results. We analysed the association between tea, coffee and ovarian cancer in a prospective cohort study and summarised results of previous studies in a meta-analysis.

show abstract

Consumption of black tea or coffee and risk of ovarian cancer

Cited by 60 publications

References 26 publications

Coffee, Tea, Colas, and Risk of Epithelial Ovarian Cancer

Coffee, Tea, Colas, and Risk of Epithelial Ovarian Cancer

A prospective study of dietary flavonoid intake and incidence of epithelial ovarian cancer

Tea and coffee drinking and ovarian cancer risk: results from the Netherlands Cohort Study and a meta-analysis

Contact Info

Product

Resources

About