Urinary Metal Exposure Linked to Lipid Abnormalities

Strategic Insights -

A recent study published in the Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease found that urinary metal exposure is significantly associated with lipid abnormalities in Chinese adults. The research, conducted by Jianqin Zhong and colleagues from Guizhou Medical University, aimed to investigate the relationships between urinary metals and lipid levels, as well as potential mediating health indicators. The study included 14,817 participants in the Chinese Multi-Ethnic Cohort (CMEC) study, with measurements of 21 urinary metals, 16 health indicators, and lipid profiles.

Key Takeaways:

  • The study found that higher urinary zinc was associated with higher total cholesterol, triglycerides, and low-density lipoprotein cholesterol, along with lower high-density lipoprotein cholesterol and increased odds of dyslipidemia.
  • Higher urinary sodium was associated with lower total cholesterol, triglycerides, low-density lipoprotein cholesterol, and decreased dyslipidemia risk.
  • Zinc, manganese, and cobalt were major contributors to dyslipidemia in mixed exposure models.
  • Quantile regression revealed stronger effects of zinc in individuals with higher lipid levels.
  • Mediation analysis showed that waist-to-hip ratio and uric acid mediated 27.2% and 12.0% of the metal-dyslipidemia relationship, respectively.
  • The study suggests that reducing exposure to certain urinary metals may contribute to dyslipidemia prevention and cardiovascular risk reduction.

Statistics:

  • 14,817 participants were included in the CMEC study baseline data.
  • 21 urinary metals, 16 health indicators, and lipid profiles were measured.
  • Higher urinary zinc was associated with a 12% increase in total cholesterol, a 29% increase in triglycerides, and a 14% increase in low-density lipoprotein cholesterol.

*Higher urinary sodium was associated with a 12% decrease in total cholesterol, a 6% decrease in triglycerides, and a 7% decrease in low-density lipoprotein cholesterol.

  • The odds ratio for dyslipidemia risk associated with higher urinary zinc was 1.76 (95% CI, 1.55-2.01).
  • The odds ratio for dyslipidemia risk associated with higher urinary sodium was 0.87 (95% CI, 0.83-0.92).

Sources:

  • Guizhou Medical University
  • Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease (http://jaha.ahajournals.org)
  • doi.org.sdpl.idm.oclc.org/10.1161/JAHA.125.042597
  • Wiley (publisher of Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease)