Breast Density, Body Mass Index, and Risk of Tumor Marker-Defined Subtypes of Breast Cancer

Annals of Epidemiology , 05/08/2012

Breast density is positively associated with breast cancer risk, regardless of disease subtype. Associations with body mass index (BMI) appear to vary more by breast cancer subtype. Additional studies are needed to confirm and further characterize risk factors for HER2–expressing and triple–negative breast cancer.

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