Background: Recently, noncommunicable disease (NCDs) has emerged as a new major health issue in North Korea. However, studies on the prevalence of its risk factors and their related health behavior among North Koreans are lacking. The studies on North Korean defectors could help us in understating their awareness and health‑promoting behavior as well as their vulnerabilities for metabolic diseases or NCDs under the current circumstances where South and North Korea have limited exchanges in the health and medical sectors. In this study, we reviewed the prevalence of risk factors or the health‑promoting behavior related to NCD among North Korean defectors. Methods: Search on the PubMed (MEDLINE), CINAHL, Cochrane Library, EMBASE, Korean Nursing Database, Korean Medical Database, KIHASA Repository, and RISS were performed. We included all study types reporting any type of risk factors or prevalence or health behaviors with the following inclusion criteria: (1) published in English or Korean; (2) NCD‑related topic; and (3) age ≥18 years. The data were extracted independently by the 2 authorsResults: Finally, 22 studies were included in the analysis: 18 quantitative study and 4 qualitative studies, and among the quantitative studies, 5 studies had comparisons with South Koreans. The number of participants ranged from 8–932 participants, and 54.6%–100% of them were women. The survey using the questionnaires was the most popular research method. Data from objective measurements, such as body weight, waist circumference, blood test, and urine analysis were used in a few studies. North Korean defectors were found to have higher smoking rates, drinking rates, and increased abdominal obesity caused by the lack of awareness and management of risk factors since they moved to South Korea.Conclusions: In this study, we showed that there were not enough studies related to NCDs and health behaviors among North Korean defectors. Nevertheless, North Korean defectors were found to be more vulnerable to NCDs, including metabolic syndrome. It is necessary to improve the awareness of NCD and its risk factors among North Korean defectors. Efforts for promoting North Korean defectors’ health behaviors by the government and related professional organizations are needed.