Breast Cancer

, Volume 21, Issue 3, pp 251–261 | Cite as

Egg consumption and breast cancer risk: a meta-analysis

  • Ruohuang Si
  • Kunpeng Qu
  • Zebin Jiang
  • Xiaojun Yang
  • Peng GaoEmail author
Review Article


The relationship between egg consumption and breast cancer risk has been inconsistent, so it is necessary to conduct a meta-analysis to evaluate the relationship. PubMed, EMBASE and ISI Web of Knowledge were searched to find cohort studies or case control studies that evaluated the relationship between egg consumption and breast cancer risk. A comprehensive meta-analysis software was used to conduct the meta-analysis. 13 studies were included. The meta-analysis results showed that egg consumption was associated with increased breast cancer risk (RR 1.04, 95 % CI 1.01–1.08). Subgroup analyses showed egg consumption was also associated with increased breast cancer risk based on cohort studies (RR 1.04, 95 % CI 1.00–1.08), among European population (RR 1.05, 95 % CI 1.01–1.09), Asian population (RR 1.09, 95 % CI 1.00–1.18), postmenopausal population (RR 1.06, 95 % CI 1.02–1.10), and those who consumed ≥2, ≤5/week (RR 1.10, 95 % CI 1.02–1.17), but not in case–control studies (RR 1.06, 95 % CI 0.97–1.15), among American population (RR 1.04, 95 % CI 0.94–1.16), premenopausal population (RR 1.04, 95 % CI 0.98–1.11) and those who consumed ≥1, <2/week (RR 1.04, 95 % CI 0.97–1.11) or >5 eggs/week (RR 0.97, 95 % CI 0.88–1.06). Egg consumption was associated with increased breast cancer risk among the European, Asian and postmenopausal population and those who consumed ≥2, ≤5/week.


Breast neoplasms Egg Meta-analysis 


Conflict of interest



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Copyright information

© The Japanese Breast Cancer Society 2014

Authors and Affiliations

  • Ruohuang Si
    • 1
  • Kunpeng Qu
    • 1
  • Zebin Jiang
    • 1
  • Xiaojun Yang
    • 1
  • Peng Gao
    • 1
    Email author
  1. 1.No. 2 Department of General SurgeryGansu Provincial HospitalLanzhouChina

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