08.01.14
Lifestyle factors largely explain differences in breast cancer risk
New research has linked lower breast cancer rates in south Asian and black women to lifestyle factors.
The British Journal of Cancer used data from the Million Women Study, which highlighted differences in breast cancer rates in women of different ethnicities. The research was funded by Cancer Research UK and the Medical Research Council.
South Asian women’s breast cancer rate was 18% lower than that of white women in England, while the rate among black women was 15% lower. Researchers found that members of both ethnic minority groups on average drink less alcohol and have more children; both of which influence the risk of developing breast cancer.
When these factors were excluded from the analysis, the risk of breast cancer was similar for women of all ethnic groups.
Study author Dr Toral Gathani, from the University of Oxford, said: “In this study of largely postmenopausal women in England, we see that the lower risk of breast cancer in south Asian and black women is largely explained by differences in lifestyle and reproductive patterns. It’s important for women of all ethnic groups to understand what are the modifiable risk factors for breast cancer, such as obesity and excessive alcohol consumption, and to take measures to reduce their risk.”
Dr Julie Sharp, Cancer Research UK’s head of health information, said: “Women can reduce their risk of breast cancer by cutting down on alcohol, keeping a healthy weight by eating a balanced diet and by keeping active.”
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