Journal
CARDIOVASCULAR RESEARCH
Volume 119, Issue 3, Pages 826-834Publisher
OXFORD UNIV PRESS
DOI: 10.1093/cvr/cvac124
Keywords
Hypertriglyceridaemia; Mortality; CVD; Diabetes; Risk factor
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This study investigates the association between fasting triglycerides and cardiovascular disease mortality. The results show that higher triglyceride levels are associated with an increased risk of CVD mortality in patients with diabetes, but not in those without diabetes. This suggests that future treatments targeting triglyceride reduction should focus on patients with diabetes.
Aims We investigated the association of fasting triglycerides with cardiovascular disease (CVD) mortality. Methods and results This cohort study included US adults from the National Health and Nutrition Examination Surveys from 1988 to 2014. CVD mortality outcomes were ascertained by linkage to the National Death Index records. Cox proportional hazards models were used to estimate hazard ratios (HRs) and 95% confidence intervals (CIs) of triglycerides for CVD mortality. The cohort included 26 570 adult participants, among which 3978 had diabetes. People with higher triglycerides had a higher prevalence of diabetes at baseline. The cohort was followed up for a mean of 12.0 years with 1492 CVD deaths recorded. A 1-natural-log-unit higher triglyceride was associated with a 30% higher multivariate-adjusted risk of CVD mortality in participants with diabetes (HR, 1.30; 95% CI, 1.08-1.56) but not in those without diabetes (HR, 0.95; 95% CI, 0.83-1.07). In participants with diabetes, people with high triglycerides (200-499 mg/dL) had a 44% (HR, 1.44; 95% CI, 1.12-1.85) higher multivariate-adjusted risk of CVD mortality compared with those with normal triglycerides (<150 mg/dL). The findings remained significant when diabetes was defined by fasting glucose levels alone, or after further adjustment for the use of lipid-lowering medications, or after the exclusion of those who took lipid-lowering medications. Conclusion This study demonstrates that fasting triglycerides of >= 200 mg/dL are associated with an increased risk of CVD mortality in patients with diabetes but not in those without diabetes. Future clinical trials of new treatments to lower triglycerides should focus on patients with diabetes.
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