Investigation of the risk factors for triple negative breast cancer

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The risk for triple negative breast cancer in relation to lifestyle factors was investigated by case-control study including 107 triple negative breast cancer cases and 1659 hospital controls who were diagnosed and admitted in Miyagi Cancer Center between 2002 and 2009. Family history of breast cancer was associated with increased risk for triple negative breast cancer, and late age at menarche was related to decreased risk of it. Furthermore, reduced risk associated with increasing intake of green tea, Chinese tea, carrot and pumpkin, and tomato was observed. This study provides important findings on prevention of triple negative breast cancer.