OBJECTIVES: We performed research and analysis to determine the risk factors of osteoporosis for women after menopause by conducting a survey and measuring the bone density through a free program to diagnose osteoporosis. SUBJECTS AND METHODS: Kyungpook National University organized and then started the free osteoporosis diagnosis program on May 11 in 2005. One hundred forty six women whose age was between the early forties and late eighties took the survey. The risk factors for osteoporosis were analyzed according to the data which was obtained from the survey. The measurements of the bone mineral density (BMD) of right calcaneus area were recorded by the use of ultrasound equipment. RESULTS: Within the results, between the advancing age (P=0.000) of subjects, the lower BMI (P=0.002), the more children (P=0.004), the breast fed longer (P=0.047), the individuals who had a lower age when menopause began (P=0.037) and their BMD showed significant correlation. CONCLUSIONS: The results express that the osteoporosis risk-factors for Korean women, despite the advancing age and the lower BMI as absolute factors, that the more children, the longer breast feeding and the lower the age that menopause began, would result in a lower density of bone.