Is Triglyceride useful for longevity?

Triglycerides are a useful biomarker for metabolic and cardiovascular health, but their direct utility for longevity is not firmly established. Elevated fasting triglycerides (>150 mg/dL) are associated with increased cardiovascular risk, which can shorten lifespan. However, this link is largely based on observational epidemiology; randomized trials showing that lowering triglycerides directly extends lifespan are lacking. Triglyceride levels are highly modifiable by diet, exercise, and alcohol intake, making single measurements potentially misleading. In the context of consumer DNA or home lab tests, it is important to note that such tests provide only a snapshot and are not diagnostic or predictive of longevity. Repeated measurements and clinical interpretation are needed. Overall, triglycerides are a moderate-evidence marker for longevity risk, not a direct longevity driver.