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Aims <p>This study aims to explore the relationship between the cardiometabolic index (CMI) and thyroid function.</p> Methods <p>Using data from the National Health and Nutrition Examination Survey (NHANES) from 2007 to 2012 we conducted a cross-sectional study. Thyroid-related hormones and antibodies were used as dependent variables, while CMI served as the independent variable. Multivariate regression analyses were used to evaluate the association between CMI and thyroid function, followed by subgroup analyses to test the robustness of the findings.</p> Results <p>A total of 3,963 subjects, with a mean age of 50.203 ± 17.634 years, were selected to take part in this study. The population was categorized into four CMI-based groups (Q1-Q4). Participants in Q1 tended to be of younger age and female and to have a high school education or less, a higher poverty-income ratio, lower BMI, higher vitamin D levels, and no history of smoking, hypertension, diabetes mellitus, or sleep disorders. CMI is closely related to TT3 and FT3 (TT3: β = 0.737, 95% CI: 0.393–1.080; FT3: β = 0.011, 95% CI: 0.003–0.019). When the CMI score increases by one unit, TT3 will increase by 0.737 ng/dl and FT3 will increase by 0.011 pg/ml. Subgroup analyses suggested that gender, age, hypertension, and smoking affected the relationship between CMI and TT3.</p> Conclusion <p>This study identified a positive association between CMI and thyroid function, with higher CMI linked to increased TT3 and FT3 levels. These findings suggest a potential metabolic connection, but longitudinal studies are needed to determine whether thyroid function can serve as a predictive marker in cardiometabolic health assessment and intervention.</p>

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Association between cardiometabolic index and thyroid function: insights from NHANES

  • 期刊论文

  • 发表日期：

    2025年12月15日

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  • Jinyan Chen,
  • Kexin Zhang,
  • Yuqun Wang,
  • Xiaofei Zhang,
  • Guoji Xiong,
  • Xiaodong Sun,
  • Ningning Hou,
  • Yang Zhang,
  • Chengxia Kan

摘要

Aims

This study aims to explore the relationship between the cardiometabolic index (CMI) and thyroid function.

Methods

Using data from the National Health and Nutrition Examination Survey (NHANES) from 2007 to 2012 we conducted a cross-sectional study. Thyroid-related hormones and antibodies were used as dependent variables, while CMI served as the independent variable. Multivariate regression analyses were used to evaluate the association between CMI and thyroid function, followed by subgroup analyses to test the robustness of the findings.

Results

A total of 3,963 subjects, with a mean age of 50.203 ± 17.634 years, were selected to take part in this study. The population was categorized into four CMI-based groups (Q1-Q4). Participants in Q1 tended to be of younger age and female and to have a high school education or less, a higher poverty-income ratio, lower BMI, higher vitamin D levels, and no history of smoking, hypertension, diabetes mellitus, or sleep disorders. CMI is closely related to TT3 and FT3 (TT3: β = 0.737, 95% CI: 0.393–1.080; FT3: β = 0.011, 95% CI: 0.003–0.019). When the CMI score increases by one unit, TT3 will increase by 0.737 ng/dl and FT3 will increase by 0.011 pg/ml. Subgroup analyses suggested that gender, age, hypertension, and smoking affected the relationship between CMI and TT3.

Conclusion

This study identified a positive association between CMI and thyroid function, with higher CMI linked to increased TT3 and FT3 levels. These findings suggest a potential metabolic connection, but longitudinal studies are needed to determine whether thyroid function can serve as a predictive marker in cardiometabolic health assessment and intervention.