We prospectively evaluated fat intake as predictor of developing breast cancer (BC) subtypes defined by estrogen receptor (ER), progesterone receptor (PR), and human epidermal growth factor 2 receptor (HER2), in a large (n = 337327) heterogeneous cohort of women, with 10062 BC case patients after 11.5 years, estimating BC hazard ratios (HRs) by Cox proportional hazard modeling. High total and saturated fat were associated with greater risk of ER(+)PR(+) disease (HR = 1.20, 95% confidence interval [CI] = 1.00 to 1.45; HR = 1.28, 95% CI = 1.09 to 1.52; highest vs lowest quintiles) but not ER(-)PR(-) disease. High saturated fat was statistically significantly associated with greater risk of HER2(-) disease. High saturated fat intake particularly increases risk of receptor-positive disease, suggesting saturated fat involvement in the etiology of this BC subtype.

Original publication

DOI

10.1093/jnci/dju068

Type

Journal article

Journal

J Natl Cancer Inst

Publication Date

09/04/2014

Volume

106

Keywords

Breast Neoplasms, Cohort Studies, Diet, High-Fat, Dietary Fats, Female, Humans, Incidence, Multivariate Analysis, Proportional Hazards Models, Receptor, ErbB-2, Receptors, Estrogen, Receptors, Progesterone