Abstract
Breast cancer is the most common cancer in women worldwide and is a significant threat to public health. This study aims to conduct a systematic review of the relationship between hormonal contraceptive use and breast cancer incidence. The search was conducted using Google Scholar, Proquest, Pubmed and one Indonesian database, Garuda, using English and Indonesian keywords. The inclusion criteria in this study were the publication year of the last five years, namely 2019-2023, English and Indonesian language, case-control observational research, using the Indonesian population, and full-text access. A total of 165 studies were obtained from the Google Scholar database, including 104 studies. The overall multivariate analysis revealed that there was a statistically significant association of hormonal contraception with the incidence of breast cancer with OR values in the range of 2-6. The findings of this systematic study suggest that the use of hormones can contribute to hormonal imbalances that further increase breast cell proliferation and disrupt gene expression, resulting in uncontrolled cell development/cancer. In addition, the findings recommend increasing the number of studies on this topic to obtain more adequate and possibly more diverse information.
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