What is a normal triglyceride level?

Generally: below 150 mg/dL is normal, 150–199 is borderline high, 200–499 is high, and 500+ is very high. Triglycerides are measured fasting for accuracy, since they rise sharply after meals. Levels above 150 are also one of the five criteria for metabolic syndrome.

What causes high triglycerides?

The biggest drivers are dietary — excess refined carbohydrates, added sugar, and alcohol — combined with insulin resistance, which impairs how the body clears triglycerides. Excess weight, a sedentary lifestyle, poorly controlled diabetes, and some medications also raise them. Because they're so responsive to diet and insulin, triglycerides often drop quickly with the right changes.

Are high triglycerides linked to insulin resistance?

Yes, strongly. High triglycerides and low HDL together are one of the clearest lipid signatures of insulin resistance. The triglyceride-to-HDL ratio is used as a surrogate marker for it. So an elevated triglyceride level is often a metabolic signal, not just a cardiovascular one.

High Triglycerides: What They Mean and Why They Rise

Of all the numbers on a lipid panel, triglycerides are the one most tied to what you eat and how your metabolism is running. Cholesterol gets the attention, but a high triglyceride level is often the earliest and most responsive signal of a metabolic problem brewing — and it’s frequently glossed over.

What triglycerides are

Triglycerides are the main form of fat in your blood and your body’s main way of storing and transporting energy. After a meal — especially one high in carbs, sugar, or alcohol — triglycerides rise as that energy is packaged up. Chronically high levels mean the system that clears them isn’t keeping up, which is often an insulin problem.

What the numbers mean

Below 150 mg/dL — normal
150–199 mg/dL — borderline high
200–499 mg/dL — high
500+ mg/dL — very high (and a pancreatitis risk at the top end)

They’re measured fasting, because they spike after eating (American Heart Association). A level over 150 is also one of the five criteria for metabolic syndrome.

The stat most people don’t know

High triglycerides rarely travel alone. Paired with a low HDL, they form one of the clearest lipid signatures of insulin resistance — so much so that the triglyceride-to-HDL ratio is used as a surrogate marker for it (Kim-Dorner et al., NCBI). In other words, an elevated triglyceride number is often waving a flag about your blood sugar and insulin, not just your heart.

Why they rise

The main drivers are highly modifiable:

Refined carbs and added sugar — the biggest dietary lever; the liver converts excess into triglycerides
Alcohol — raises triglycerides significantly, even in moderate amounts for some people
Insulin resistance — impairs triglyceride clearance (fasting insulin is worth checking)
Excess weight and inactivity
Poorly controlled diabetes and certain medications

The upside of all that: because triglycerides respond so quickly to diet and insulin sensitivity, they often drop fast with the right changes — making them a satisfying marker to track.

What this looks like in Bevita

Bevita's Overall picture screen showing triglycerides read alongside insulin and metabolic markers

A triglyceride number means far more read next to your HDL and insulin markers than alone. Bevita calculates your triglyceride-to-HDL ratio automatically, flags triglycerides against the thresholds, and tracks them alongside HOMA-IR and glucose — so a high level reads as the metabolic signal it usually is, and you can watch it fall as you change diet and activity.

What to do

Get a fasting triglyceride level — non-fasting readings run higher.
Read it with HDL and insulin — the ratio reveals the metabolic angle.
Target the drivers — refined carbs, sugar, and alcohol are the fastest levers.
Re-test after changes — triglycerides move quickly, so they show progress fast. Talk to a clinician, especially if very high.

References

American Heart Association. HDL, LDL Cholesterol and Triglycerides.
Kim-Dorner SJ, et al. Triglycerides-to-HDL cholesterol ratio and insulin resistance. NCBI / PMC.
National Heart, Lung, and Blood Institute (NHLBI). Blood Cholesterol.

This article is for education and isn’t medical advice. Discuss your results with a qualified clinician.

Track your triglycerides with Bevita

Triglycerides are a fast-moving marker worth watching. Upload your labs to Bevita and it flags them against the thresholds, calculates your triglyceride-to-HDL ratio, and tracks the trend beside your metabolic markers. Download Bevita, upload your lipid panel, and watch the number respond.