Triglycerides

Fasting triglycerides reflect the cargo of VLDL particles secreted by the liver and are one of the cleanest lipid-panel readouts of insulin sensitivity and dietary pattern. Elevation tracks insulin resistance, refined-carbohydrate intake, alcohol consumption, and visceral adiposity. Optimal fasting values sit below 80 mg/dL, well under the conventional reference cutoff of 150.

Optimal range

Range varies by individual.

Test frequency

Annually as part of a standard lipid panel; every three to six months during active intervention.

When to measure

Measure on every annual lipid panel from age 30 onward. Always draw fasting, 12 hours, water only, for an interpretable value, since postprandial triglycerides can run two to three times higher than fasting. Re-measure six to eight weeks after major dietary changes, weight loss, or any triglyceride-lowering intervention (omega-3 supplementation, fibrate or icosapent ethyl prescription).

How to measure

Direct measurement on a standard lipid panel via venous blood draw. Cost is $20–$60 retail; almost always included in annual physical bloodwork. Some labs report non-fasting triglycerides on lipid panels, these are useful for screening but the fasting value is what should drive clinical decisions. Repeated values across two or three separate draws are more meaningful than any single measurement.

Why this biomarker matters

Elevated triglycerides flag metabolic dysfunction long before fasting glucose moves. The biology is straightforward: when insulin sensitivity falls, the liver overproduces VLDL particles loaded with triglyceride; postprandial chylomicron clearance also slows; both contribute to fasting and postprandial elevation. Triglyceride-to-HDL ratio above 2 (in mg/dL units) is one of the simplest insulin-resistance proxies on a standard lipid panel and tracks reasonably with HOMA-IR. Elevated triglycerides also reshape the LDL particle distribution toward small dense LDL, the more atherogenic phenotype, which is part of why high triglycerides are an independent cardiovascular risk signal even at the same LDL-C. In observational data triglycerides are a stronger cardiovascular risk marker in women than in men. Severely elevated triglycerides (above 500 mg/dL) raise pancreatitis risk and warrant pharmacologic intervention. Lifestyle-driven elevations (100–300 mg/dL) usually respond well within weeks to reductions in alcohol, refined carbohydrates, and added sugars, plus increased aerobic activity and omega-3 intake.

The prime report

Weekly performance intelligence.

New studies, protocols, and optimization frameworks delivered every Monday. No fluff, no motivation quotes — only what moves the needle.