ABSTRACT
Introduction: Breast cancer is a worldwide burden in both developed and develop: countries and unless some action is taken, it will continue to grow for the foreseeable futi Hence, diagnosing its risk factors is of great importance
The aim of this study was to investigate the association between menstrual and reproductive fact with breast cancer
Material and Methods: In a case-control study in Mashad loss patients with confirmed bre; cancer were compared with loss healthy women who were patient s neighborhood and matched cases by age and interview. A questionnaire including demographic information as well questions regarding reproductive factors emphasizing abortion were used. Data collect we analyzed using SPSS ver 12
Results: The findings indicated Early age at menarche, age at menopause, late age at first f term pregnancy and fewer number of full term pregnancy significantly associated with breast cam risk
The risk of breast cancer showed an increase in women who had a history of aborti [OR=2.09%95 C1M.2-3.7]. Also women experiencing abortion before their first full te pregnancy showed a higher risk of breast cancer [OR= 5.9 95% CI= 1.8-19.6]
Conclusion: Our findings suggest that decreased parity, early Age at menarche, late age menopause and first birth and abortion were the most important determinants of breast cancer thus authors purpose health interventions about these mothers