A good triglyceride level is below 150 mg/dL (1.7 mmol/L). That’s the threshold used by the American Heart Association, the American College of Cardiology, and the Mayo Clinic to define a healthy reading. Once your number climbs above 150, the risk categories shift upward in meaningful ways, and the higher you go, the more your cardiovascular and pancreatic health come into play.
Triglyceride Ranges and What They Mean
Your triglyceride result from a standard blood draw (lipid panel) falls into one of four categories:
- Healthy: below 150 mg/dL
- Borderline high: 150 to 199 mg/dL
- High: 200 to 499 mg/dL
- Very high: 500 mg/dL or above
These cutoffs aren’t arbitrary. The 150 mg/dL line is the point at which clinical guidelines define persistent hypertriglyceridemia and doctors begin evaluating your broader cardiovascular risk. At 500 mg/dL and above, the concern shifts from long-term heart disease to a more immediate threat: acute pancreatitis, a painful and potentially dangerous inflammation of the pancreas. The risk of pancreatitis climbs to roughly 10 percent when levels exceed 1,000 mg/dL.
Why Triglycerides Matter for Your Heart
Triglycerides themselves don’t directly clog arteries. What they signal is more important. High triglyceride readings indicate elevated levels of cholesterol-carrying particles called remnant lipoproteins. These particles get trapped in artery walls, are absorbed by immune cells, and trigger low-grade inflammation that drives plaque buildup over time. So while the triglyceride number on your lab report is technically a marker rather than the direct cause, it reliably points to the process that leads to heart attacks and strokes.
This is why the latest 2026 ACC/AHA guidelines recommend that adults aged 40 to 75 with persistently elevated triglycerides (150 to 499 mg/dL) get a formal 10-year cardiovascular risk assessment to guide decisions about lifestyle changes or medication.
The Triglyceride-to-HDL Ratio
Your triglyceride number becomes even more informative when you compare it to your HDL (“good”) cholesterol. The ratio of triglycerides to HDL is a useful proxy for insulin resistance and metabolic health. To calculate it, divide your triglyceride number by your HDL number. A ratio of 1:1 or less is optimal. A ratio of 2:1 or below is still considered low risk. Once you hit 4:1 or higher, the risk of metabolic syndrome, insulin resistance, and cardiovascular disease rises substantially. If your triglycerides are 120 and your HDL is 60, for example, your ratio is 2:1, which is a reassuring sign.
How Triglycerides Are Tested
Triglycerides are measured through a simple blood test, usually as part of a lipid panel that also checks your total cholesterol, LDL, and HDL. You’ll typically be asked to fast for 9 to 12 hours beforehand, because eating, especially fatty or sugary meals, temporarily spikes triglycerides and can inflate your reading. Your doctor will tell you whether fasting is required for your specific test.
A single high reading doesn’t necessarily define your baseline. Triglycerides fluctuate day to day based on what you recently ate and drank. If your first result comes back elevated, your doctor will likely retest after a period of lifestyle adjustments to see whether the number is persistently high.
What Raises Triglycerides
Your liver produces triglycerides from excess calories, particularly from two sources: sugar and alcohol. Refined carbohydrates and added sugars are converted to triglycerides in the liver especially efficiently. Alcohol has a similar effect, and even moderate drinking can push levels noticeably higher in some people. Beyond diet, excess body weight, physical inactivity, poorly controlled diabetes, and certain medications can all elevate triglycerides. There’s also a genetic component. Some people produce more triglyceride-rich particles regardless of diet, a condition called familial hypertriglyceridemia.
Lowering Triglycerides Through Lifestyle
For most people with borderline or moderately high triglycerides, diet and exercise are the first and most effective tools. Regular physical activity can reduce triglycerides by up to 30 percent, though the effect depends on the type, duration, and intensity of exercise. Aerobic activity (walking, cycling, swimming) tends to have the strongest impact, and consistency matters more than occasional intense sessions.
On the dietary side, reducing added sugars, refined grains, and alcohol makes the biggest difference. Replacing these with whole grains, vegetables, and foods rich in omega-3 fats (fatty fish like salmon, mackerel, and sardines) helps lower production of triglyceride-rich particles in the liver. The current guidelines recommend referral to a registered dietitian for anyone with triglycerides at or above 150 mg/dL who also has metabolic risk factors, and it’s strongly recommended for anyone at 1,000 mg/dL or above.
When Medication Becomes Part of the Plan
Lifestyle changes remain the foundation at every triglyceride level, but medication enters the picture at certain thresholds. For adults aged 40 to 75 with triglycerides in the 150 to 499 mg/dL range and borderline or intermediate cardiovascular risk, a statin may be considered to lower overall heart disease risk. Statins primarily target LDL cholesterol but can modestly reduce triglycerides as well.
At 500 mg/dL and above, the priority shifts to preventing pancreatitis. Fibrates and prescription-strength omega-3 fatty acids are the main options at this level. The American Heart Association has found that prescription omega-3s at a dose of 4 grams per day reduce triglycerides by 20 to 30 percent or more, depending on how high the starting level is. Doses below 2 grams per day of EPA and DHA are not effective for meaningful triglyceride reduction, which is why over-the-counter fish oil capsules (typically 1 gram or less per pill) rarely move the needle on their own.
One important nuance: omega-3 supplements that combine EPA and DHA can raise LDL cholesterol in people with very high triglycerides, while EPA-only formulations do not appear to have this effect. This distinction matters when your doctor is choosing between available options.
Triglycerides During Pregnancy
Triglycerides naturally rise during pregnancy, but levels at or above 500 mg/dL pose a real risk of pancreatitis. In these cases, the current guidelines consider fibrates (after the first trimester) or high-dose prescription omega-3s reasonable options alongside dietary changes to bring levels down and protect against pancreatic inflammation.