Affiliation:
1. Department of Breast Surgical Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People’s Republic of China
2. Department of Breast Surgery, The Second Hospital of Shandong University, Jinan, Shandong, People’s Republic of China
Abstract
Abstract
Introduction.
Although obesity has been reported worldwide as a risk factor for breast cancer, there are still some inconsistencies regarding the association between obesity and breast cancer. Body mass index (BMI) is used most to assess the extent of obesity; however, the association of other body size characteristics, such as waist and hip circumference, with susceptibility to breast cancer in Chinese Han women needs to be better assessed.
Patients and Methods.
Female Chinese Han patients (N = 2,800) were recruited from 21 hospitals in northern and eastern China from April 2012 to April 2013 for a case-control study. The significant differences of factors related to body size between the breast-cancer case and control groups were determined by Student’s t test and chi-square tests.
Results.
Premenopausal women with breast cancer had higher BMI and larger waist and hip circumferences (p = 2 × 10−4, <1 × 10−6, and 2 × 10−5, respectively). However, these body-size factors were not associated with postmenopausal breast cancer (p = .45, 0.32, and 0.12, respectively). BMI between 28 and 30 kg/m2 or greater than 32 kg/m2 was related to breast cancer incidence in the overall study population and in premenopausal women but not in the postmenopausal group.
Conclusion.
Obesity is significantly associated with breast cancer in Chinese Han premenopausal women but not in postmenopausal women. Thus, it is important to realize that weight control, as well as avoiding abdominal obesity, should be considered as one of the most effective methods of reducing breast cancer risk.
Funder
Ministry of Health of the People’s Republic of China
Establishment and Improvement of High-Risk Populations Screening and Evaluation System for Breast Cancer
Publisher
Oxford University Press (OUP)
Cited by
13 articles.
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