Coffee and black tea consumption and risk of breast cancer by estrogen and progesterone receptor status in a Swedish cohort

Abstract

Findings from this prospective study do not support a role of coffee consumption in the development of breast cancer but suggest that black tea consumption may be positively associated with risk of ER+/PR+ tumors.

Tea consumption and the incidence of cancer

“…Of the 547 citations identified from database searches, 87 datasets from 57 articles (Heilbrun et al, 1986;Kinlen et al, 1988;Shibata et al, 1994;Goldbohm et al, 1996;Zheng et al, 1996;Harnack et al, 1997;Hartman et al, 1998;Key et al, 1999;Michaud et al, 1999Michaud et al, , 2001Michaud et al, , 2010Nagano et al, 2001;Terry and Wolk, 2001;Tsubono et al, 2001;Zeegers et al, 2001;Hoshiyama et al, 2002;Su and Arab, 2002;Allen et al, 2004;Suzuki et al, 2004Suzuki et al, , 2005Suzuki et al, , 2009Adebamowo et al, 2005;Michels et al, 2005;Larsson and Wolk, 2005;Hirvonen et al, 2006;Kikuchi et al, 2006;Kuriyama et al, 2006;Ide et al, 2007;Lee et al, 2007;Silvera et al, 2007;Steevens et al, 2007;Sun et al, 2007;Ganmaa et al, 2008;Kurahashi et al, 2008Kurahashi et al, , 2009Li et al, 2008;Lin et al, 2008;Tworoger et al, 2008;Inoue et al, 2009;Larsson et al, 2009;Ui et al, Iwasaki et al,...…”

“…A manual search of the references of the included studies did not yield any new eligible studies. Among the studies included, 20 were from the USA or Canada (Heilbrun et al, 1986;Kinlen et al, 1988;Shibata et al, 1994;Zheng et al, 1996;Harnack et al, 1997;Michaud et al, 1999Michaud et al, , 2001Su and Arab, 2002;Adebamowo et al, 2005;Michels et al, 2005;Silvera et al, 2007;Ganmaa et al, 2008;Tworoger et al, 2008;Boggs et al, 2010;Holick et al, 2010;Ren et al, 2010;Dubrow et al, 2012;Sinha et al, 2012;Hildebrand et al, 2013), 15 were from Europe (Goldbohm et al, 1996;Hartman et al, 1998;Terry and Wolk, 2001;Zeegers et al, 2001;Larsson and Wolk, 2005;Hirvonen et al, 2006;Steevens et al, 2007;Larsson et al, 2009;Bhoo Pathy et al, 2010;Michaud et al, 2010;Fagherazzi et al, 2011;Ros et al, 2011;Braem et al, 2012;Shafique et al, 2012;Geybels et al, 2013) and 22 were from Asia (Key et al, 1999;Nagano et al, 2001;Tsubono et al, 2001;Hoshiyama et al, 2002;Allen et al, 2004;…”

Coffee prevents early events in tamoxifen-treated breast cancer patients and modulates hormone receptor status

“…Here, the reported frequency of breast cancers expressing estrogen receptors (ER) ranges from 66.0% to 86.1% [2,3]. Patients with ER+ tumors are usually treated with endocrine therapy to reduce the proliferation of tumor cells.…”

“…Less than 1% of the coffee consumed in Sweden is decaffeinated [7]. Coffee contains several bioactive ingredients such as the phenolics caffeic acid and chlorogenic acid [3], caffeine, and phytoestrogens [8]. The different ingredients in coffee have both carcinogenic and anti-carcinogenic effects, which may influence the prognosis of breast cancer.…”

Consumption of filtered and boiled coffee and the risk of incident cancer: a prospective cohort study

“…With respect to the most common cancer sites, results suggest no associations in prostate cancer and colorectal cancer, an inverse association in breast cancer that may be limited to premenopausal tumors, and a positive association in lung cancer [1][2][3][4][5][6][7][8]. In studies of lung cancer, residual confounding by cigarette smoking is difficult to eliminate and likely contributed to observed associations [5].…”