Background: Breast cancer is one of the reproductive cancers that cause increased morbidity and mortality. Based on the Global Burden Cancer (Globocan) data, breast cancer has increased by more than 20%, while the mortality rate has increased by 14% since 2008.Purpose: The aim of the study is to conclude a systematic literature review that is related to risk factors that influence breast cancer in Southeast Asia.Methods: This study emphasizes risk factors that influence breast cancer incidence such as; contraceptive use, age, body mass index, menarche, menopause, parity, breastfeeding, and smoking using the systematic literature review method identified a total of 7 relevant journals and summarized in a narrative manner.Result: The results of this journal review show that contrast use, age, body mass index (BMI) in this case a higher BMI or obesity, early age menarche that is influenced by unhealthy lifestyles, menopause, and the Human Papillomavirus (HPV) significant risk factors that influence breast cancer incidence in Southeast Asia.Conclusion: Age, body mass index (BMI), and contraceptive use are very influential on the incidence of cancer.
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