Ming Chen1,2, Huiyun Zhu1, Yiqi Du3, Geliang Yang4. 1. Department of Gastroenterology, Changhai Hospital, Second Military Medical University (Naval Medical University), 168 Changhai Road, Shanghai, 200433, China. 2. Company Eleven, Students Brigade, Second Military Medical University (Naval Medical University), Shanghai, 200433, China. 3. Department of Gastroenterology, Changhai Hospital, Second Military Medical University (Naval Medical University), 168 Changhai Road, Shanghai, 200433, China. duyiqi006@126.com. 4. Department of Integrative Oncology, Changhai Hospital, Second Military Medical University (Naval Medical University), 168 Changhai Road, Shanghai, 200433, China. yanggeliang@hotmail.com.
Abstract
OBJECTIVES: This review assessed the complex longitudinal processes involved in cancer etiology during life course to understand how the social inequality may be embodied in and influence cancer risk. METHODS: A narrative literature review was performed with a keyword search conducted using PubMed, Scientific Electronic Library Online and Google. Three aspects of literatures were mainly included: social environmental mechanisms of cancer, life course of cancer development and social inequality of cancer risk. This review was complemented with manual searches of relevant journals and reference lists of primary articles. RESULTS: Social inequality is mostly embodied in genetic susceptibility and early childhood development, the duration and intensity of exposures and the access to medical resources, which influence the timing and accumulation of cancer risk during life course. CONCLUSIONS: The individuals with lower socioeconomic status are more likely to have higher cancer risk because of more frequency of timing and quantity of accumulation of adverse exposures and greater impact on epigenetic mechanisms. Primary prevention is the best prevention strategy to reduce cancer risk.
OBJECTIVES: This review assessed the complex longitudinal processes involved in cancer etiology during life course to understand how the social inequality may be embodied in and influence cancer risk. METHODS: A narrative literature review was performed with a keyword search conducted using PubMed, Scientific Electronic Library Online and Google. Three aspects of literatures were mainly included: social environmental mechanisms of cancer, life course of cancer development and social inequality of cancer risk. This review was complemented with manual searches of relevant journals and reference lists of primary articles. RESULTS: Social inequality is mostly embodied in genetic susceptibility and early childhood development, the duration and intensity of exposures and the access to medical resources, which influence the timing and accumulation of cancer risk during life course. CONCLUSIONS: The individuals with lower socioeconomic status are more likely to have higher cancer risk because of more frequency of timing and quantity of accumulation of adverse exposures and greater impact on epigenetic mechanisms. Primary prevention is the best prevention strategy to reduce cancer risk.
Entities:
Keywords:
Cancer; Cancer risk; Exposure; Life course; Social inequality; Socioeconomic status
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