Team:SMMU-China/Human Practices
Overview
Incidence
As we all know, China is the largest low-income or middle-income country and the most populous country in the world. And the breast cancer is the most common cancer in Chinese women，just as the whole world. By looking up to the data and papers, we know that the incidence of breast cancer in china has increased more than twice since 1990s, which rise as same as global rate. Form the newest data about the status of tumor in china, the incidence of breast cancer is 17.10% in 2015, which is higher in the city and about 27.4% in ShangHai.
Mortality from the breast cancer rose during the past 30 years in china, and in urban areas mortality increased by 100%, however in rural areas mortality did not increased a lot ( the data is shown in the picture2, which is cited from the paper: Breast cancer in china).
Through huge numbers of study about breast cancer, we know some risk factors for breast cancer in Chinese women.
(1) Reproductive and hormonal factors——eg, a long menstrual life, nulliparity, increased age at first livebirth, limited breastfeeding, and the low fertility rate;
(2) Obesity in premenopausal and postmenopausal women and low levels of physical activity——eg, Chinese women (both premenopausal and postmenopausal) with a body-mass index of 24 kg/m2 or higher had a four-times increased risk of breast cancer compared with women with a body-mass index of less than 24 kg/m2(cited: A case-control study on risk factors of breast cancer in China)
(3) Family history;
References
[1] Ya-Li X , Qiang S , Guang-Liang S , et al. A case-control study on risk factors of breast cancer in China[J]. Archives of Medical Science, 2012, 2:303-309.[2] Fan L, Strasserweippl K, Li J J, et al. Breast cancer in China.[J]. Lancet Oncology, 2014, 15(7):e279-e289.
[3] Zheng R S , Sun K , Zhang S W , et al. [Report of cancer epidemiology in China, 2015][J]. Zhonghua Zhong Liu Za Zhi, 2019, 41(1):19-28.
DEMO PART 2
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