Can Triglyceride help with longevity?

Whether triglycerides can help with longevity requires nuance. Triglycerides are the main form of stored energy. Elevated fasting triglyceride levels (>150 mg/dL) are a well-established risk factor for cardiovascular disease, which shortens lifespan. Large prospective cohort studies and meta-analyses (e.g., Emerging Risk Factors Collaboration, Lancet 2009) show an independent association between high triglycerides and cardiovascular mortality. However, the causal evidence is weaker because triglycerides often cluster with low HDL cholesterol and insulin resistance. Lowering triglycerides through lifestyle (weight loss, exercise, omega-3 fatty acids) or medications (fibrates, high-dose omega-3) can reduce cardiovascular risk, indirectly extending lifespan. Very low triglycerides (<50 mg/dL) may indicate malnutrition or underlying disease and are not desirable. For longevity, a moderate triglyceride level within the normal range (approx. 50–150 mg/dL) appears optimal. The evidence is human-strong, based on large epidemiological studies and clinical endpoints. Caveat: triglycerides alone are not a direct longevity marker; they are part of a complex metabolic profile.