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Background <p>This study aimed to investigate the relationship between serum fibroblast growth factor-19 (FGF19) levels and diabetes, as well as the potential mediating role of body mass index (BMI).</p> Methods <p>Data from 1,018 participants with valid serum FGF19 measurements from the Shenzhen–Hong Kong United Network on Cardiovascular Disease study were analyzed. Logistic regression models were used to estimate odds ratios (ORs) and 95% confidence intervals (CIs) for diabetes risk. Mediation analysis was conducted to assess the extent to which BMI mediated the association between serum FGF19 levels and diabetes.</p> Results <p>The mean age of participants was 45.1 years, with 77 individuals (7.6%) diagnosed with diabetes. Natural logarithm (ln)-transformed FGF19 levels were inversely associated with BMI [age- and sex-adjusted β (95% CI): -0.30 (-0.58, -0.03)]. Ln-transformed FGF19 levels were also negatively associated with diabetes after adjusting for covariates, including age, sex, smoking status, alcohol consumption, blood pressure, BMI, waist circumference, and lipid profile [OR (95% CI): 0.66 (0.47–0.95)]. No significant interactions were observed between ln-transformed FGF19 levels and age, sex, obesity, or abdominal obesity in relation to diabetes. Mediation analysis revealed that BMI reduction accounted for 10.1% of the association between ln-transformed FGF19 levels and diabetes.</p> Conclusion <p>Serum FGF19 levels are inversely associated with diabetes risk in the Chinese population, with BMI serving as a partial mediator of this relationship.</p>

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Body mass index mediates the association between serum fibroblast growth factor-19 and diabetes

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年1月8日

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  • Lin Liu,
  • Shuyun Liu,
  • Juanying Zhen,
  • Lijie Ren,
  • Guoru Zhao,
  • Jianguo Liang,
  • Aimin Xu,
  • Chao Li,
  • Jun Wu,
  • Bernard MY Cheung

摘要

Background

This study aimed to investigate the relationship between serum fibroblast growth factor-19 (FGF19) levels and diabetes, as well as the potential mediating role of body mass index (BMI).

Methods

Data from 1,018 participants with valid serum FGF19 measurements from the Shenzhen–Hong Kong United Network on Cardiovascular Disease study were analyzed. Logistic regression models were used to estimate odds ratios (ORs) and 95% confidence intervals (CIs) for diabetes risk. Mediation analysis was conducted to assess the extent to which BMI mediated the association between serum FGF19 levels and diabetes.

Results

The mean age of participants was 45.1 years, with 77 individuals (7.6%) diagnosed with diabetes. Natural logarithm (ln)-transformed FGF19 levels were inversely associated with BMI [age- and sex-adjusted β (95% CI): -0.30 (-0.58, -0.03)]. Ln-transformed FGF19 levels were also negatively associated with diabetes after adjusting for covariates, including age, sex, smoking status, alcohol consumption, blood pressure, BMI, waist circumference, and lipid profile [OR (95% CI): 0.66 (0.47–0.95)]. No significant interactions were observed between ln-transformed FGF19 levels and age, sex, obesity, or abdominal obesity in relation to diabetes. Mediation analysis revealed that BMI reduction accounted for 10.1% of the association between ln-transformed FGF19 levels and diabetes.

Conclusion

Serum FGF19 levels are inversely associated with diabetes risk in the Chinese population, with BMI serving as a partial mediator of this relationship.