A healthy triglyceride level is below 150 mg/dL for adults. For children and teens ages 10 to 19, the target is lower, under 90 mg/dL. These numbers come from a standard blood test, and where you fall on the scale tells you a lot about your metabolic health and your risk for heart disease.
The Four Triglyceride Ranges
Triglyceride results are grouped into 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
Being in the healthy range doesn’t just mean your triglycerides are “fine.” It signals that your body is efficiently processing the fats and sugars you eat. Once levels creep into the borderline or high range, the risk of cardiovascular disease starts climbing. At very high levels, above 1,000 mg/dL, the primary concern shifts to acute pancreatitis, a painful and potentially dangerous inflammation of the pancreas. That risk reaches roughly 10% at levels above 1,000 mg/dL and exceeds 50% when levels surpass 5,000 mg/dL.
What Triglycerides Actually Are
Triglycerides are the most common type of fat in your blood. When you eat more calories than your body needs right away, whether from carbohydrates, fats, or protein, your liver converts the excess into triglycerides. These get packaged into particles that travel through your bloodstream and are eventually stored in fat cells for later use as energy.
This system works well when energy intake and expenditure are roughly balanced. Problems start when excess calories consistently flood the system. Your liver keeps producing triglycerides, blood levels stay elevated, and the surplus contributes to fatty buildup in artery walls. Over time, this raises the risk of heart attack and stroke.
How the Test Works
Triglycerides are measured with a simple blood draw, typically as part of a lipid panel that also checks your cholesterol. You’ll usually need to fast for 9 to 12 hours before the test, since eating can temporarily spike triglyceride levels and skew the results. Your doctor will let you know whether fasting is required, but for the most accurate triglyceride reading, it generally is.
Triglycerides fluctuate throughout the day based on what you’ve eaten, so a single reading is a snapshot. If your number comes back high, your doctor will likely want to recheck it to confirm the pattern before making any treatment decisions.
The Triglyceride-to-HDL Ratio
Your triglyceride number alone tells part of the story. Dividing your triglycerides by your HDL cholesterol (both in mg/dL) gives a ratio that’s a surprisingly useful marker for insulin resistance, a condition where your cells stop responding well to insulin and your risk for type 2 diabetes and heart disease increases.
Research suggests the ideal ratio varies by sex and ethnicity. In white European men, a ratio above 3.8 was the best predictor of insulin resistance; in white European women, the threshold was lower at 2.0. For South Asian men and women, the cutoffs were 2.8 and 2.5, respectively. If your triglycerides are 120 and your HDL is 60, your ratio is 2.0, which is reassuring for most people. A ratio of 4 or higher is a red flag worth discussing with your doctor, even if your individual numbers don’t look alarming on their own.
What Pushes Triglycerides Up
Sugar, especially fructose, is one of the most potent dietary drivers of high triglycerides. In one study, when subjects drank fructose-sweetened beverages with meals instead of glucose-sweetened ones, their 24-hour triglyceride levels were almost 200% higher. The effect was even more pronounced in people who were already insulin resistant. This matters because fructose is a primary sweetener in sodas, fruit juices, and many processed foods. Cutting back on these is one of the fastest ways to bring triglycerides down.
Excess calories from any source raise triglycerides, but refined carbohydrates are particularly efficient at it. Your liver readily converts surplus glucose into triglycerides through a process called lipogenesis. Alcohol has a similar effect, stimulating triglyceride production in the liver. Being overweight, being physically inactive, and smoking all contribute as well. Some medications, including certain hormonal therapies and steroids, can raise triglycerides too.
How to Lower Your Levels
Diet Changes
Reducing added sugars and refined carbohydrates is the single most impactful dietary change for high triglycerides. Swapping white bread, sugary drinks, and processed snacks for whole grains, vegetables, and lean proteins gives your liver less raw material to convert into triglycerides. If you drink alcohol, reducing your intake or eliminating it entirely can produce noticeable improvements.
Omega-3 fatty acids, found in fatty fish like salmon, mackerel, and sardines, directly lower triglyceride production. Each additional gram of omega-3s per day reduces triglycerides by about 5.9 mg/dL on average, with bigger effects in people who start with higher levels. For people with clinically high triglycerides, the American Heart Association notes that prescription-strength omega-3s at 4 grams per day can produce meaningful reductions. Over-the-counter fish oil supplements provide lower doses, but a large review of 86 trials found that even 0.5 grams per day reduced triglycerides by about 15% over time.
Exercise
Regular aerobic exercise is one of the most reliable ways to bring triglycerides down. In one study, two months of high-intensity interval training (three sessions per week, about 32 minutes each) reduced fasting triglyceride concentrations by roughly 28%. The mechanism was straightforward: the liver produced fewer triglyceride-rich particles. You don’t need to match that exact protocol. Consistent moderate activity like brisk walking, cycling, or swimming produces similar benefits when sustained over time.
Medications
When lifestyle changes aren’t enough, medications become part of the picture. The most recent guidelines from the American College of Cardiology and American Heart Association (published in 2026) recommend statins as the foundation of drug therapy for people with persistently elevated triglycerides who are also at risk for heart disease. For people whose primary problem is very high triglycerides rather than high LDL cholesterol, a class of drugs called fibrates may be used. These work by speeding up the breakdown of triglyceride-rich particles in the blood while also reducing how much the liver produces. Prescription omega-3 formulations are another option, particularly for preventing pancreatitis in people with levels above 1,000 mg/dL.
What “Optimal” Really Looks Like
While “below 150” is the standard healthy cutoff, many cardiologists consider lower numbers even better. A triglyceride level in the 50 to 100 mg/dL range paired with an HDL above 40 to 60 mg/dL represents a metabolic profile associated with low cardiovascular risk. If your triglycerides are 145, you’re technically in range, but you’re right at the edge, and small dietary changes could give you more of a buffer.
Context matters too. The latest guidelines emphasize that non-HDL cholesterol (your total cholesterol minus your HDL) is actually a better predictor of heart disease risk than triglycerides alone, because it captures all the harmful cholesterol-carrying particles in your blood. If your triglycerides are borderline but your non-HDL cholesterol is low, your overall risk profile may still be favorable. A lipid panel gives you all these numbers at once, making it easy to see the full picture.