Body size and breast cancer risk: Findings from the European Prospective Investigation into Cancer and Nutrition (EPIC)

Petra H. Lahmann, Kurt Hoffmann, Naomi Allen, Carla H. Van Gils, Kay Tee Khaw, Bertrand Tehard, Franco Berrino, Anne Tjønneland, Janne Bigaard, Anja Olsen, Kim Overvad, Françoise Clavel-Chapelon, Gabriele Nagel, Heiner Boeing, Dimitrios Trichopoulos, George Economou, George Bellos, Domenico Palli, Rosario Tumino, Salvatore PanicoCarlotta Sacerdote, Vittorio Krogh, Petra H M Peeters, H. Bas Bueno-De-Mesquita, Eiliv Lund, Eva Ardanaz, Pilar Amiano, Guillem Pera, José R. Quirós, Carmen Martínez, María J. Tormo, Elisabet Wirfält, Göran Berglund, Göran Hallmans, Timothy J. Key, Gillian Reeves, Sheila Bingham, Teresa Norat, Carine Biessy, Rudolf Kaaks, Elio Riboli

Research output: Contribution to journalArticle

Abstract

The evidence for anthropometric factors influencing breast cancer risk is accumulating, but uncertainties remain concerning the role of fat distribution and potential effect modifiers. We used data from 73,542 premenopausal and 103,344 postmenopausal women from 9 European countries, taking part in the EPIC study. RRs from Cox regression models were calculated, using measured height, weight, BMI and waist and hip circumferences; categorized by cohort-wide quintiles; and expressed as continuous variables, adjusted for study center, age and other risk factors. During 4.7 years of follow-up, 1,879 incident invasive breast cancers were identified. In postmenopausal women, current HRT modified the body size-breast cancer association. Among nonusers, weight, BMI and hip circumference were positively associated with breast cancer risk (all p trend ≤ 0.002); obese women (BMI > 30) had a 31% excess risk compared to women with BMI <25. Among HRT users, body measures were inversely but nonsignificantly associated with breast cancer. Excess breast cancer risk with HRT was particularly evident among lean women. Pooled RRs per height increment of 5 cm were 1.05 (95% CI 1.00-1.16) in premenopausal and 1.10 (95% CI 1.05-1.16) in postmenopausal women. Among premenopausal women, hip circumference was the only other measure significantly related to breast cancer (ptrend = 0.03), after accounting for BMI. In postmenopausal women not taking exogenous hormones, general obesity is a significant predictor of breast cancer, while abdominal fat assessed as waist-hip ratio or waist circumference was not related to excess risk when adjusted for BMI. Among premenopausal women, weight and BMI showed nonsignificant inverse associations with breast cancer.

Original languageEnglish
Pages (from-to)762-771
Number of pages10
JournalInternational Journal of Cancer
Volume111
Issue number5
DOIs
Publication statusPublished - Sep 20 2004

Keywords

  • Body weight
  • Breast neoplasm
  • Fat distribution
  • Height
  • Hormone replacement therapy
  • Obesity

ASJC Scopus subject areas

  • Cancer Research
  • Oncology

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  • Cite this

    Lahmann, P. H., Hoffmann, K., Allen, N., Van Gils, C. H., Khaw, K. T., Tehard, B., Berrino, F., Tjønneland, A., Bigaard, J., Olsen, A., Overvad, K., Clavel-Chapelon, F., Nagel, G., Boeing, H., Trichopoulos, D., Economou, G., Bellos, G., Palli, D., Tumino, R., ... Riboli, E. (2004). Body size and breast cancer risk: Findings from the European Prospective Investigation into Cancer and Nutrition (EPIC). International Journal of Cancer, 111(5), 762-771. https://doi.org/10.1002/ijc.20315