Triglycerides health effects
Pro Research Analysisby 
Searched over 200M research papers
Triglycerides and Cardiovascular Disease Risk
High blood triglyceride levels are strongly linked to an increased risk of cardiovascular diseases (CVD), including heart attacks and strokes. Multiple large studies have shown that as triglyceride levels rise, so does the risk of dying from CVD and from all causes. For example, people with high triglyceride levels (≥200 mg/dL) have a 25% higher risk of CVD death and a 20% higher risk of death from any cause compared to those with normal levels. Even moderate increases in triglycerides (150–199 mg/dL) are associated with higher risks, while lower levels are linked to reduced risk Liu2013Nurieva2023Tada2021. This relationship holds true across different populations and is independent of other risk factors.
Triglyceride-Rich Lipoproteins and Atherosclerosis
Triglycerides are carried in the blood by lipoproteins such as very low-density lipoproteins (VLDL) and chylomicrons. When these triglyceride-rich lipoproteins are elevated, they contribute to the formation of foam cells in blood vessels, a key step in the development of atherosclerosis (hardening and narrowing of the arteries) Nurieva2023Borén2022. Genetic and metabolic studies confirm that high triglyceride levels and their remnants play a direct role in causing atherosclerotic cardiovascular disease Miller2011Borén2022.
Triglyceride Lowering and Cardiovascular Outcomes
Lowering triglyceride levels can reduce the risk of major cardiovascular events. Therapies such as fibrates, niacin, and marine-derived omega-3 fatty acids have been shown to lower triglycerides and, in some cases, reduce cardiovascular risk. For example, each 1 mmol/L reduction in triglycerides is associated with a 9–16% lower risk of major vascular events, especially when using high-dose EPA (a type of omega-3) . However, the benefit of triglyceride lowering is generally smaller than that seen with lowering LDL cholesterol, and results can vary depending on the therapy used .
Triglycerides, Glucose Metabolism, and Diabetes Risk
Elevated triglycerides are an early sign of problems with glucose metabolism and can predict the development of type 2 diabetes. Short-term increases in triglycerides can worsen blood sugar control, while lowering triglycerides with medications like fibrates can improve glucose homeostasis and may help prevent diabetes . This suggests that high triglycerides may directly contribute to impaired glucose tolerance, not just as a marker but as a cause .
Triglyceride Metabolism and Mortality
Not only high triglyceride levels, but also increased triglyceride metabolism (as measured by certain blood markers) is linked to higher risks of death from all causes, including cardiovascular disease and cancer. This increased risk is independent of body mass index and overall triglyceride levels, indicating that how the body processes triglycerides also matters for health outcomes .
Medium-Chain Triglycerides (MCTs) and Metabolic Health
Medium-chain triglycerides (MCTs) are a type of fat that may have different health effects compared to long-chain triglycerides. Diets enriched with pure MCTs can help with weight loss and improve blood triglyceride levels and insulin resistance, especially in people who are overweight or have metabolic disorders Xia2022He2024. However, the specific type of MCT and the dose can influence these effects, and not all MCTs have the same impact on cholesterol and lipid metabolism Xia2022He2024.
Conclusion
High blood triglyceride levels are a significant risk factor for cardiovascular disease, all-cause mortality, and impaired glucose metabolism. Lowering triglycerides, especially through lifestyle changes and certain medications, can reduce these risks, though the benefits may vary depending on the approach. Monitoring and managing triglyceride levels is important for overall heart and metabolic health.
Sources and full results
Most relevant research papers on this topic