The Journal of Practical Medicine ›› 2025, Vol. 41 ›› Issue (15): 2362-2371.doi: 10.3969/j.issn.1006-5725.2025.15.011

• Clinical Research • Previous Articles    

The relationship between the triglyceride⁃glucose index and its modified index and colorectal cancer: A prospective cohort study

Yi LU1,2,Shilong DAI1,Mingjun WANG1,Jing ZHOU1,Junying HAO1,2,Chen ZHENG,Xinbo XU1,2,Shan DING1,2,Qingsong ZHANG1()   

  1. *.Department of General Surgery,Kailuan General Hospital Affiliated to North China University of Science and Technology,Tangshan 063000,Hebei,China
    *.Graduate School of North China University of Science and Technology,Tangshan 063000,Hebei,China
  • Received:2025-04-29 Online:2025-08-10 Published:2025-08-11
  • Contact: Qingsong ZHANG E-mail:Klyy888888@163.com

Abstract:

Objective To investigate the association between the TyG index, its modified variants, and the risk of developing colorectal cancer (CRC). Methods This study included a total of 93,177 participants from the 2006 Kailuan Group health examination cohort. Participants were categorized into four quartiles (Q1-Q4) according to their TyG and modified TyG indices. Follow-up began at the baseline examination, with incident CRC as the primary outcome. Participants were censored at the time of CRC diagnosis, death, or the end of the study, whichever occurred first. The dose-response relationship between TyG and its modified indices and the risk of CRC was evaluated using restricted cubic splines (RCS) in conjunction with Cox proportional hazards regression models, yielding hazard ratios (HRs) and 95% confidence intervals (CIs). To compare the strength of associations between TyG and its modified versions (TyG-BMI, TyG-WC, TyG-WHR, TyG-WHtR, TyG-WWI) and CRC risk, HRs for CRC per one standard deviation increase in each index were calculated and compared. Results Both the TyG index and its modified variants demonstrated a significant dose-response relationship with the risk of CRC incidence. Specifically, for the TyG index, each 1-standard deviation (SD) increase was associated with a 1.17-fold (95%CI: 1.09 ~ 1.27) higher risk of CRC. Compared with the first quartile (Q1), the third quartile (Q3) and fourth quartile (Q4) exhibited a 1.25-fold (95%CI: 1.01 ~ 1.55) and 1.26-fold (95%CI: 1.01 ~ 1.57) increased risk, respectively. For TyG-BMI, each 1-SD increase was linked to a 1.20-fold (95%CI: 1.07 ~ 1.35) elevated CRC risk. Compared with Q1, Q3 and Q4 showed a 1.32-fold (95%CI: 1.06 ~ 1.64) and 1.51-fold (95%CI: 1.21 ~ 1.88) increase, respectively. Regarding TyG-WC, each 1-SD increment was associated with a 1.22-fold (95%CI: 1.13 ~ 1.32) higher CRC risk, with Q3 and Q4 showing a 1.35-fold (95%CI: 1.08 ~ 1.70) and 1.56-fold (95%CI: 1.24 ~ 1.96) increased risk compared to Q1. For TyG-WHtR, each 1-SD increase was associated with a 1.24-fold (95%CI: 1.08-1.42) higher CRC risk. Compared with Q1, Q2, Q3, and Q4 demonstrated a 1.31-fold (95%CI: 1.03 ~ 1.66), 1.55-fold (95%CI: 1.23 ~ 1.95), and 1.60-fold (95%CI: 1.27 ~ 2.02) increase, respectively. In the case of TyG-WHR, each 1-SD increase was associated with a 1.19-fold (95%CI: 1.10 ~ 1.29) higher CRC risk, with Q4 showing a 1.42-fold (95%CI: 1.14 ~ 1.77) increased risk compared to Q1. Finally, for TyG-WWI, each 1-SD increase was associated with a 1.22-fold (95%CI: 1.13 ~ 1.32) elevated CRC risk, with both Q3 and Q4 showing a 1.58-fold increase (Q3: 95%CI: 1.26 ~ 1.98; Q4: 95%CI: 1.25 ~ 1.99). Stratified analyses by sex and age consistently revealed significant associations between the TyG index and its modified variants and CRC risk. Furthermore, these indices were independently associated with the incidence of both colon cancer and rectal cancer. Conclusions (1) Elevated levels of the TyG index and its modified variants are independent risk factors for CRC. (2) Both the TyG index and its modified forms demonstrate a significant dose-response association with the incidence of CRC. (3) Among the modified TyG indices, TyG-WWI, TyG-WHtR, TyG-BMI, TyG-WC, and TyG-WHR showed stronger correlations with CRC risk compared to the original TyG index.

Key words: colorectal cancer, insulin resistance, influencing factors analysis

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