Breast cancer is the most common cancer among Malaysian
women. This study aimed to determine the reproductive for
premenopausal breast cancer risk in Kuala Lumpur,
Malaysia. A case-control study was conducted in 216
histopathologically confirmed cases of premenopausal
breast cancer and 216 community-based controls that were
matched by age within a 5-year period and ethnicity. The
results of this study showed that premenopausal breast
cancer risks were strongly related to parity, number of live births and family history of breast cancer. Premenopausal women with these known reproductive and family history risk factors should take extra measures to undergo appropriate screening method for early detection of breast cancer