A good triglyceride level is below 150 mg/dL on a fasting blood test. That’s the threshold most major health organizations, including the American Heart Association and American College of Cardiology, use to separate normal from elevated. The further below 150 you are, the better, with levels under 100 mg/dL considered optimal by many cardiologists.
Triglyceride Ranges and What They Mean
Triglycerides are measured through a standard blood draw, usually as part of a lipid panel that also checks your cholesterol. You’ll typically need to fast for 9 to 12 hours beforehand, since a recent meal can temporarily spike your numbers. The results are reported in milligrams per deciliter (mg/dL) and fall into four general categories:
- Normal: Below 150 mg/dL
- Borderline high: 150 to 199 mg/dL
- High: 200 to 499 mg/dL
- Very high: 500 mg/dL and above
These aren’t arbitrary cutoffs. The 150 mg/dL line is where cardiovascular risk starts climbing in a measurable way. The 2026 ACC/AHA guidelines on cholesterol management specifically flag persistently elevated triglycerides at or above 150 mg/dL as a reason to assess your overall heart disease risk and consider whether lifestyle changes or medication are needed.
Why Triglycerides Matter for Your Health
Triglycerides are the most common type of fat in your blood. Your body converts calories it doesn’t need right away into triglycerides and stores them in fat cells for later use. That process is normal. Problems start when the supply consistently outpaces demand, leaving excess fat circulating in your bloodstream.
Persistently high triglycerides contribute to the buildup of fatty deposits in artery walls, raising your risk of heart attack and stroke. They also tend to travel with other warning signs: low “good” cholesterol, higher “bad” cholesterol, and insulin resistance. When your triglycerides are elevated, the whole picture of your metabolic health is usually shifting in the wrong direction.
At very high levels, the risk changes from a long-term cardiovascular concern to a more immediate one. Once triglycerides exceed 1,000 mg/dL, the risk of acute pancreatitis (a painful and potentially dangerous inflammation of the pancreas) reaches about 10%. Above 5,000 mg/dL, that risk jumps to over 50%. This is why the latest clinical guidelines recommend aggressive treatment specifically aimed at lowering triglycerides when levels reach 1,000 mg/dL or higher.
What Raises Triglycerides
Diet is the single biggest lever. Your body converts excess carbohydrates, particularly sugar and refined starches, into triglycerides very efficiently. Research on added sugar intake shows that people who consume the most added sugars have triglyceride levels roughly 10% higher than those who consume the least. That gap may sound modest, but it compounds over years and stacks on top of other dietary factors.
Alcohol has an outsized effect. Even moderate drinking raises triglyceride production in the liver, and heavy drinking can push levels into the hundreds or thousands. Excess body weight, physical inactivity, and smoking all contribute as well. Some medications, including certain blood pressure drugs, steroids, and hormone therapies, can elevate triglycerides as a side effect. Underlying conditions like uncontrolled diabetes, thyroid disorders, and kidney disease also play a role.
Genetics matter too. Some people produce more triglycerides or clear them from the bloodstream more slowly due to inherited traits. If your levels are stubbornly high despite a healthy lifestyle, that genetic component is worth exploring with your provider.
How to Lower Your Triglycerides
Lifestyle changes alone can produce dramatic results. Regular aerobic exercise, anything from brisk walking to cycling to swimming, reduces triglycerides by 15 to 50% depending on the intensity and duration. That’s a range wide enough to move someone from “high” back into the normal category without any medication. The effect comes partly from your liver producing less triglyceride-rich particles and partly from your muscles burning more fat for fuel.
On the dietary side, the highest-impact changes are cutting back on added sugars (including sweetened drinks, desserts, and processed snacks), reducing refined carbohydrates like white bread and pasta, and limiting alcohol. Replacing those calories with vegetables, whole grains, lean protein, and healthy fats, especially fatty fish like salmon and mackerel, helps both directly and indirectly by supporting weight loss. Losing even 5 to 10% of your body weight can significantly lower triglycerides.
When lifestyle changes aren’t enough, statins are the standard first-line medication. They’re primarily known for lowering LDL cholesterol, but they reduce triglycerides too. For people with severely elevated levels, prescription-strength omega-3 fatty acids are an option. These are not the same as over-the-counter fish oil supplements. The prescription versions deliver over 3 grams of concentrated omega-3s per day (four capsules), a dose that’s been shown to meaningfully lower triglycerides. Over-the-counter supplements contain much lower amounts and aren’t regulated to the same standard.
How Often to Check Your Levels
Most adults should have a lipid panel, which includes triglycerides, at least every four to six years starting in their 20s. If your levels come back borderline or high, or if you have risk factors like diabetes, obesity, or a family history of heart disease, more frequent testing makes sense. People actively working to bring their numbers down through diet, exercise, or medication typically retest every three to six months to track progress.
Keep in mind that triglyceride levels fluctuate more than cholesterol from day to day. A single high reading after a holiday weekend doesn’t necessarily mean you have a chronic problem. Conversely, one normal result doesn’t guarantee you’re in the clear if your lifestyle regularly pushes levels up. The pattern over multiple tests matters more than any single number, which is why the clinical guidelines emphasize “persistently elevated” triglycerides as the trigger for treatment decisions.