Abstract

To investigate the risk factors of colon cancer in the highest incidence area, Jiashan county, providing scientific basis for monitoring and prevention. With a population-based case-control study, 109 colon cancer patients with 1:7 matched controls were interviewed with uniform questionnaires. Conditional logistic regression was used for univariate and multivariate analysis of colon cancer. Ten years before, high monthly pork consumption (OR = 1.608), high monthly animal oil consumption (OR = 1.391), psychological depression (OR = 9.887), negative emotion (OR = 1.723), lower digestive tract diseases (OR = 4.163), and history of colorectal cancer in the first degree relatives (OR = 3.421) were the main risk factors of colon cancer. At that time, high monthly vegetable consumption was a protective factor for colon cancer (OR = 0.422). Colon cancer in Jiashan county was related to dietary factors. The research results support the colon cancer etiological hypothesis of "fat-bile acid" and "deficiency of dietary fibres". Psychological depression, inheritance and lower digestive tract diseases were also correlated with colon cancer.

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