Background: Young women have low risk of acute coronary syndrome (ACS) during their reproductive period, mainly due to the physiologically protective effect of estrogen hormone on the coronary endothelium. The purpose of this study was to assess the risk factors of ACS in the Egyptian women patients during their reproductive age period, who admitted to Tanta University Cardiovascular department hospital.
 Results: Obesity, hypertension, diabetes mellitus, chronic kidney disease, systemic lupus erythematosus, myocardial bridge, cushion syndrome and radiotherapy for breast cancer were significantly independently ACS risk factors that correlated to the SYNTAX score. There is significance of coefficient of the independent variable in the risk factors (Group A, group B, group C separately and groups A, B, C together) on the severity and level of SYNTAX score in ACS. The regression analysis was significant in groups A and B of ACS risk factors separately. While the regression analysis was significant and there was a clear relationship between ACS risk factors- groups A, B, C. together and SYNTAX score.
 Conclusions: There was a positive relationship between the increase total number of ACS risk factors subgroups (Traditional, Nontraditional and Gynecological) and the severity of coronary artery stenosis that assessed by SYNTAX scorer.