High triglycerides means having more than 150 mg/dL of triglycerides in your blood, measured through a standard lipid panel. Triglycerides are the main form of fat your body uses for energy storage. When you eat more calories than you need, your liver converts the excess into triglycerides, which travel through your bloodstream and get tucked away in fat tissue for later use. That system works well at normal levels, but when triglycerides stay elevated, they contribute to artery damage and, at very high levels, can trigger a painful and dangerous inflammation of the pancreas.
Triglyceride Levels and What They Mean
The American Heart Association and other major guidelines use four categories:
- Normal: below 150 mg/dL
- Borderline high: 150 to 199 mg/dL
- High: 200 to 499 mg/dL
- Very high: 500 mg/dL or above
Most people with moderately elevated triglycerides have no idea anything is off. The number shows up on a routine blood test and that’s the first clue. The higher you go above 150, the more attention the number deserves, both for heart disease risk and for the possibility that something else (a medication, a metabolic condition) is driving the elevation.
How Triglycerides Differ From Cholesterol
Triglycerides and cholesterol travel through your blood in similar packages called lipoproteins, but they do different jobs. Triglycerides are pure fuel: your body breaks them down to power muscles and organs when food isn’t available. Cholesterol is a structural molecule used to build cell membranes and hormones. They’re measured on the same blood panel, which is why they get lumped together, but they cause problems through different pathways.
Why High Triglycerides Are Dangerous
The heart disease connection is real but slightly counterintuitive. Triglycerides themselves don’t pile up inside artery walls. Instead, the particles that carry triglycerides through your blood (called triglyceride-rich lipoproteins) also carry cholesterol. When those particles are abundant, more of them slip into the artery lining, get swallowed by immune cells, and fuel the chronic inflammation that builds plaque. High triglycerides, in other words, are a reliable signal that your blood is carrying too much cholesterol in these harmful particles.
At very high levels, a second risk emerges: acute pancreatitis. The risk climbs steeply once triglycerides exceed 1,000 mg/dL. Among people with levels between 1,000 and 1,999 mg/dL, roughly 10% develop pancreatitis. Above 2,000 mg/dL, that figure doubles to about 20%. Pancreatitis from triglycerides causes severe abdominal pain, hospitalization, and can be life-threatening.
Physical Signs You Might Notice
Most people with high triglycerides feel perfectly fine, which is why the condition goes undetected without bloodwork. At extremely elevated levels, though, a few visible signs can appear. Eruptive xanthomas are small, pea-sized bumps that range from yellow to reddish and feel firm and waxy. They tend to show up on the buttocks, shoulders, arms, and thighs, and they can be itchy or tender. These bumps are harmless on their own but signal that triglyceride levels are dangerously high and need treatment.
What Raises Triglycerides
The single most common driver is eating more calories than your body burns, particularly from carbohydrates. Sugar, white flour, fructose, and other refined carbs are especially efficient at pushing triglycerides up because your liver readily converts excess carbohydrate into triglyceride. Alcohol has a particularly potent effect as well. It’s high in both calories and sugar, and even moderate drinking can elevate levels in susceptible people.
Beyond diet, a long list of medical conditions can raise triglycerides as a secondary effect. Type 2 diabetes and obesity are the most common, both of which cause the liver to overproduce triglyceride-rich particles while also slowing their clearance from the blood. Hypothyroidism, kidney disease, and metabolic liver disease are other frequent culprits. Inflammatory conditions like rheumatoid arthritis and lupus can raise levels through chronic immune activation. Pregnancy temporarily raises triglycerides due to hormonal shifts.
Several categories of medication raise triglycerides too. These include oral estrogens, corticosteroids like prednisone, certain blood pressure medications (beta blockers and thiazide diuretics), some antipsychotics, and retinoids used for severe acne. If your triglycerides jumped after starting a new medication, that connection is worth raising with your prescriber.
How Exercise and Diet Lower Triglycerides
Lifestyle changes are the first-line treatment for every level of triglyceride elevation. Exercise has a rapid and measurable effect. A single session of aerobic exercise can lower circulating triglycerides by around 30% compared to a sedentary day, largely by speeding up how fast your body clears triglyceride particles from the blood and by reducing how much the liver produces. That benefit is temporary, which is why regular exercise matters more than occasional intense workouts.
Dietary changes focus on reducing the inputs that drive triglyceride production. Cutting back on added sugars, sweetened drinks, refined grains, and alcohol makes the biggest difference. Replacing those calories with vegetables, whole grains, lean protein, and healthy fats shifts your liver away from triglyceride overproduction. For people who are overweight, losing even a modest amount of weight compounds these effects. If you have very high triglycerides, eliminating alcohol entirely is recommended because of its outsized impact.
When Medication Becomes Part of the Plan
For triglycerides between 200 and 499 mg/dL, statins are the foundation of drug treatment when lifestyle changes alone aren’t enough. Statins primarily target LDL cholesterol, but they also reduce triglycerides, and the latest guidelines from the American Heart Association and American College of Cardiology (published in 2026) still position them as the go-to option for reducing heart disease risk in this range.
For very high triglycerides (500 mg/dL and above), the immediate goal shifts to getting levels below 500 to prevent pancreatitis. Fibrates lower triglycerides by 15% to 60% depending on how elevated the starting level is. Prescription-strength omega-3 fatty acids at 4 grams per day are another option, approved specifically for very high triglycerides. One large trial found that a purified form of the omega-3 fat EPA reduced major cardiovascular events by 25% in people with elevated triglycerides already taking a statin.
For the rare genetic condition called familial chylomicronemia syndrome, where triglycerides stay above 1,000 mg/dL despite all other interventions, newer targeted therapies are now available. Current guidelines recommend a drug that blocks a protein involved in triglyceride metabolism, used alongside dietary management to lower levels and reduce pancreatitis risk.
One notable shift in the latest guidelines: fibrates and niacin are no longer recommended as routine add-ons to statin therapy for heart disease prevention, because clinical trials have not shown they reduce cardiovascular events when combined with a statin. Their role is now more limited, primarily reserved for pancreatitis prevention in people with very high levels.