【新研究】佩戴胸罩與女性乳腺癌的患病風險

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【新研究】戴胸罩並不增加女性乳腺癌的患病風險

人們擔心胸罩可能阻礙乳房的淋巴結循環和引流，導致有害物質堆積而增加乳腺癌的風險。甚至有“專家”也說: “胸罩增加乳腺癌風險”。一項發表在 Cancer Epidemiology, Biomarkers & Prevention 最新的研究證實，乳罩與乳腺癌之間並無任何聯係，佩戴胸罩是安全的。

該研究的作者，來自華盛頓大學公共衛生學院的博士研究生Lu Chen說: “我們並未發現胸罩與乳腺癌有關的證據”。

此項研究是在NCI(the National Cancer Institute)的資助下進行的。Lu Chen對超過1000名確診乳腺癌的女性進行研究( 454 invasive ductal carcinoma (IDC) cases and 590 invasive lobular carcinoma (ILC) cases)，並與469名無乳腺癌的女性進行對比(469 control women)。在綜合多種因素(罩杯大小、新舊程度、每天戴的平均時數、戴有鋼圈撐托的那種、第一次戴乳罩的年齡等)後，Lu發現二者並無聯係。

論文: http://cebp.aacrjournals.org/content/early/2014/08/27/1055-9965.EPI-14-0414.abstract

報道: http://www.aacr.org/Newsroom/Pages/News-Release-Detail.aspx?ItemID=588#.VAxAGGOOqMQ

Bra Wearing Not Associated with Breast Cancer Risk: A Population-Based Case–Control Study

Abstract

Despite the widespread use of bras among U.S. women and concerns in the lay media that bra wearing may increase breast cancer risk, there is a scarcity of credible scientific studies addressing this issue. The goal of the study was to evaluate the relationship between various bra-wearing habits and breast cancer risk among postmenopausal women. We conducted a population-based case–control study of breast cancer in the Seattle–Puget Sound metropolitan area that compared 454 invasive ductal carcinoma (IDC) cases and 590 invasive lobular carcinoma (ILC) cases diagnosed between 2000 and 2004 with 469 control women between 55 to 74 years of age. Information on bra-wearing habits and other breast cancer risk factors was collected from study participants through in-person interviews. Multivariate adjusted odds ratios (OR) and their associated 95% confidence intervals (CI) were estimated using polytomous logistic regression. No aspect of bra wearing, including bra cup size, recency, average number of hours/day worn, wearing a bra with an underwire, or age first began regularly wearing a bra, was associated with risks of either IDC or ILC. Our results did not support an association between bra wearing and increased breast cancer risk among postmenopausal women. Cancer Epidemiol Biomarkers Prev; 1–5. ©2014 AACR.

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