The risk for epithelial ovarian cancer linked with the consumption of caffeinated drinks (tea, coffee, and soft drinks) and green tea is inconclusive. However, few studies have investigated the type of caffeinated beverage or the type of tea.
We assessed consumption of tea (black/caffeinated tea and green tea individually), coffee, and caffeinated soft drinks, as nicely as level of consumption, and the threat for epithelial ovarian cancer and its histotypes.
This examine was performed inside of a population-based situation-handle study in Alberta and British Columbia, Canada from 2001 to 2012. After restricting to situations of epithelial invasive cancers and controls aged 40-79 years who finished an interview that incorporated coffee, soft drink, and tea consumption (ascertained starting up in 2005 in British Columbia and 2008 in Alberta), there have been a total of 524 cases and 1587 controls. These that did not meet the threshold for beverage consumption (at least once per month for 6 months or more) have been classified as non-drinkers. Grownup lifetime cumulative consumption (cup-years=cups/day*many years) was calculated. Unconditional logistic regression was used to estimate adjusted odds ratios (aOR) and 95% self-confidence intervals (CI) to describe the association between the pertinent drink consumption and chance.
No excess chance was observed for coffee or caffeinated soft drinks. Similarly, any tea consumption was not related with chance, but when stratified by the type of tea, there was an improve in threat in black tea only drinkers (aOR=one.56 95% CI:one.07-2.28 for >40 cup-years), but no excess chance for the unique green tea drinkers. Comparable findings have been observed for post-menopausal girls. The association for black tea only consumption was primarily witnessed in the endometrioid histotype (aOR=three.19 95% CI: 1.32-seven.69).
Black tea consumption could be associated with an enhanced risk epithelial ovarian carcinoma. The extra chance is witnessed only in the endometrioid histotype but not in serous or clear cell. More research are necessary to confirm these findings and determine the constituents in black tea that may boost the threat.
The submit C Y Leung et al, 2016. Tea, coffee, and caffeinated beverage consumption and risk of epithelial ovarian cancers, Cancer Epidemiology, Volume 45. appeared first on Coffee and Health.