A good triglyceride level is below 150 mg/dL (milligrams per deciliter). That’s the threshold most major health organizations use to define a healthy reading. If your number falls under 150 on a standard lipid panel, your triglycerides are where they should be.
Triglyceride Level Categories
Triglycerides are a type of fat in your blood that your body uses for energy. When you eat more calories than you need, your body converts the excess into triglycerides and stores them in fat cells for later use. A routine blood test called a lipid panel measures them alongside your cholesterol numbers.
Here’s how the levels break down for adults:
- Healthy: Below 150 mg/dL
- Mild (borderline high): 150 to 199 mg/dL
- Moderate (high): 200 to 499 mg/dL
- Severe (very high): 500 mg/dL or above
There’s no widely recognized “optimal” subcategory below 150 the way there is for cholesterol. Below 150 is the goal, and lower numbers within that range are generally better. That said, triglycerides that are extremely low (under about 50 mg/dL) are uncommon and can sometimes signal other health issues like malnutrition or an overactive thyroid, so a very low number isn’t automatically something to celebrate without context.
Why High Triglycerides Matter
Elevated triglycerides contribute to cardiovascular disease, though the pathway is less direct than most people assume. Triglycerides themselves don’t build up in your artery walls. Instead, the particles that carry triglycerides through your blood (called triglyceride-rich lipoproteins) leave behind cholesterol-loaded remnants as they shrink. Those remnants pass through the lining of your arteries, get absorbed by immune cells, and become part of the fatty plaques that narrow blood vessels over time. This process doesn’t even require the chemical changes that LDL cholesterol needs to cause damage, which makes these remnants particularly efficient at promoting plaque buildup.
At the extreme end, very high triglycerides pose a separate and more immediate danger: pancreatitis. The risk of acute pancreatitis in the general population is roughly 0.5 to 1 percent, but it jumps to about 10 percent when triglycerides exceed 1,000 mg/dL. Above 5,000 mg/dL, the risk climbs past 50 percent. These extreme levels are relatively rare and usually involve a genetic component, but they require urgent treatment.
Fasting vs. Non-Fasting Tests
Lipid panels have traditionally required fasting for 9 to 12 hours beforehand, and triglycerides are the main reason. Unlike total cholesterol and HDL cholesterol, which barely change after eating, triglyceride levels spike after a meal and can give a misleadingly high reading.
That said, current guidance from the American College of Cardiology and the American Heart Association recognizes that non-fasting tests are acceptable for initial screening. If a non-fasting triglyceride result comes back above 200 mg/dL, your provider will typically ask you to repeat the test after fasting in two to four weeks to get a more accurate baseline. For people already taking cholesterol-lowering medications, or those being evaluated for genetic lipid disorders, fasting tests remain the standard.
What Raises Triglycerides
Diet is the most direct lever. Your body converts excess carbohydrates, particularly refined sugars, into triglycerides very efficiently. Data from a large national survey of nearly 7,000 adolescents found that each additional daily serving of sugar-sweetened beverages was associated with a 2.25 mg/dL increase in triglyceride levels. In adults, fructose intake above 100 grams per day (roughly the amount in two to three large sodas) produces a dose-dependent rise in fasting triglycerides. Below that threshold, fructose has little measurable effect.
Alcohol tells a similar story. Moderate drinking has a modest but real impact: consuming about one ounce of alcohol per day corresponds to triglyceride levels 5 to 10 percent higher than those of nondrinkers. Heavier drinking pushes the effect further. If your triglycerides are already borderline, cutting back on alcohol is one of the faster ways to bring them down.
Beyond diet, several conditions push triglycerides higher. Insulin resistance and type 2 diabetes are among the most common culprits, because when your cells don’t respond well to insulin, your liver produces more triglyceride-carrying particles. Hypothyroidism, kidney disease, and certain medications (including some blood pressure drugs and steroids) can also elevate levels. And genetics play a significant role. Some people eat well and exercise regularly but still carry high triglycerides because of inherited traits that affect how their body processes fat.
How to Lower Triglycerides
Exercise is one of the most effective tools. Regular aerobic activity, whether running, cycling, swimming, or brisk walking, reduces triglycerides by 15 to 50 percent depending on the intensity and consistency. Research on high-intensity interval training found it lowered the specific type of triglyceride particle produced by the liver by about 28 percent. The effect is both immediate and cumulative: a single session of exercise temporarily reduces triglycerides, and consistent training keeps them lower over time.
Dietary changes work alongside exercise. The biggest wins come from reducing added sugars, refined carbohydrates, and alcohol. Replacing refined grains with whole grains, swapping sugary drinks for water, and limiting alcohol to moderate amounts can bring borderline levels back into the healthy range for many people. Losing excess weight also helps substantially, because stored triglycerides are released from fat cells and metabolized as you lose body fat.
When lifestyle changes aren’t enough, prescription omega-3 fatty acids are an established treatment for high triglycerides. The American Heart Association has confirmed that prescription-strength omega-3s at a dose of 4 grams per day are effective and safe for reducing triglycerides, either alone or alongside other lipid-lowering medications. This is an important distinction from over-the-counter fish oil supplements, which typically provide far less omega-3 per capsule. Research shows that doses below 2 grams per day of combined EPA and DHA (the active omega-3 fatty acids) are not effective for lowering triglycerides, even in people with elevated levels. Standard fish oil supplements rarely reach the therapeutic threshold, so if your triglycerides are in the moderate or severe range, a prescription formulation is what the evidence supports.
How Triglycerides Differ From Cholesterol
Triglycerides and cholesterol are both fats in your blood, but they serve different purposes. Triglycerides are your body’s primary form of stored energy. When you eat more calories than you burn, the surplus gets packaged as triglycerides and tucked into fat cells. Cholesterol, on the other hand, is a structural molecule. Your body uses it to build cell membranes, produce hormones, and make bile acids that help digest food.
They also travel through your blood differently. LDL cholesterol (the “bad” kind) and HDL cholesterol (the “good” kind) each ride on their own type of protein carrier. Triglycerides share a ride with cholesterol on larger particles, which is why the two numbers often rise and fall together, and why your lipid panel reports both. Having high triglycerides alongside low HDL cholesterol is a particularly common pattern, one closely tied to insulin resistance, and it carries more cardiovascular risk than either abnormality alone.