Association between Hemoglobin Levels and Colorectal Polyps in Asymptomatic Chinese Adults

Abstract

Background/Aims. Metabolic and hematologic aberrations are often observed in individuals with colorectal polyps. This study was aimed at investigating whether hemoglobin levels are associated with colorectal polyps in asymptomatic Chinese adults. Methods. A cross-sectional analysis was performed among 1633 asymptomatic adults who underwent colonoscopy examinations during routine health check-ups at the First Affiliated Hospital, College of Medicine, Zhejiang University, between 2015 and 2018. Results. A total of 449 (27.50%) participants were diagnosed with colorectal polyps, and those with colorectal polyps had significantly higher hemoglobin levels than did those without colorectal polyps. Hemoglobin levels were positively associated with the prevalence of colorectal polyps, with rates of 16.43%, 26.20%, 32.17%, and 35.87% among participants with hemoglobin levels in the first, second, third, and fourth quartiles, respectively (P for trend<0.001). Stepwise multiple regression analysis showed that elevated hemoglobin levels independently increased the risk of colorectal polyps (odd ratio=1.017; 95% confidence interval: 1.008–1.026). Conclusion. Elevated hemoglobin levels were significantly and independently associated with the prevalence and risk of colorectal polyps in asymptomatic adults.

The predictive value of routine laboratory tests for colorectal polyps: a retrospective study

“…Previous studies have revealed that an elevated hemoglobin level increases the risk of nonalcoholic fatty liver disease and metabolic syndrome, which are associated with colorectal polyps (26,27). Shen et al conducted a cross-sectional study to explore the relationship between hemoglobin levels and colorectal polyps, and they found that elevated hemoglobin levels were significantly and independently associated with the prevalence and risk of colorectal polyps in asymptomatic adults (28). Similar to the study mentioned above, elevated hemoglobin levels independently increased the risk of colorectal polyps in our study.…”