High Triglycerides (Hypertriglyceridemia): What the Number Means and How We Lower It

A patient hands me a lab report and points to one line that’s flagged in red. His cholesterol looks fine. His triglycerides are 320. He wants to know if that’s a big deal, and whether he needs a pill. It’s one of the most common questions I get, and the honest answer is that it depends on the number and on the rest of his risk. Triglycerides are the lipid people understand the least, and they’re among the most fixable.

Let me walk through what triglycerides are, what your number means, why the same lab value can mean two completely different things at two different heights, and how we bring it down. Some of this you can handle at your kitchen table. Some of it needs medication. Most people land somewhere in between.

What triglycerides are

Triglycerides are the main form of fat your body uses for energy. After you eat, anything you don’t burn right away gets packaged as triglycerides and shipped through your blood or stored in fat tissue for later. Hypertriglyceridemia simply means there’s too much of that fat circulating in your bloodstream.

Your body handles triglycerides with a small fleet of particles. Right after a meal, your gut wraps dietary fat into large particles called chylomicrons. Between meals, your liver sends out its own fat-carrying particles called VLDL. Both drop off fuel to your muscles and fat tissue along the way, and an enzyme parked on the walls of your small blood vessels, lipoprotein lipase, does the unloading. When that system runs smoothly, your triglycerides stay low. When something clogs it up, whether it’s too much incoming fat, too much sugar for the liver to process, or a weak enzyme, the particles pile up and your number climbs.

We measure triglycerides with a standard lipid panel, the same blood test that reports your cholesterol. A fasting level of 150 mg/dL or higher counts as high. If the blood is drawn without fasting, we use 175 as the cutoff, because a recent meal raises the number on its own. This is one of the most common lipid problems I see, and a lot of people have it without any idea, because it causes no symptoms until it gets extreme.

What your number means

Triglycerides fall into bands, and the band you’re in tells me what to worry about and how hard to push. Normal is under 150. Mild is 150 to 199. Moderate is 200 to 499. Severe is 500 to 999. Very severe is 1,000 or higher.

Here’s the part that surprises people. The danger changes character as the number rises, and it’s really two different problems wearing the same name. Below roughly 885 mg/dL, high triglycerides are a heart-and-artery problem. They travel with a load of cholesterol-rich leftover particles, called remnants, that slip into your artery walls and help build plaque. So in this range, a high triglyceride number is a signal about your risk of a heart attack or stroke down the road.

Once you push past about 900, a second and more immediate danger takes over. At those heights, chylomicrons start to flood your blood faster than your body can clear them, and that thick, fatty blood can inflame your pancreas. That inflammation, called acute pancreatitis, is a medical emergency. It causes severe belly pain, lands people in the hospital, and can be life-threatening. So when I see a triglyceride level over 1,000, protecting the pancreas comes first, ahead of the slower worry about plaque.

Knowing which problem I’m solving changes the whole plan. A level of 250 gets a measured, long-game approach aimed at your heart. A level of 1,500 gets an urgent, aggressive approach aimed at your pancreas. Same lab, very different response.

Why non-HDL cholesterol tells the story better

When your triglycerides are high, your standard LDL number gets unreliable, so I look at non-HDL cholesterol instead. You get it by subtracting your HDL from your total cholesterol, and it captures every harmful, plaque-building particle in your blood in a single figure.

This is a piece of the puzzle most patients have never heard about, and it’s one of the more useful things to understand. The usual LDL number on your report is often calculated, not measured, and that calculation breaks down when triglycerides run high. It can read falsely low and give false comfort. Non-HDL cholesterol sidesteps the problem. It rolls up your LDL and all those triglyceride-rich remnant particles into one total, and in someone with high triglycerides it predicts heart risk better than LDL alone.

I’ll sometimes also check apolipoprotein B, usually shortened to apoB, which counts the actual number of harmful particles directly. And if the pattern looks like it runs in the family, I’ll suggest screening relatives, because some triglyceride disorders are inherited and worth catching early. If you want the deeper background on the harmful particles themselves, my guide to LDL cholesterol covers how they drive artery disease, and lipoprotein(a) covers a related inherited risk.

What drives triglycerides up

Most high triglycerides come from a mix of everyday factors stacked on top of a genetic tendency. Extra weight, insulin resistance, type 2 diabetes, alcohol, a diet heavy in sugar and refined starch, and inactivity are the usual culprits. Thyroid, kidney, and medication effects fill out the list.

The single biggest lever for most people is the metabolic one. Carrying extra weight around the middle, being insulin resistant, or having type 2 diabetes all push the liver to overproduce triglyceride-rich particles while slowing the enzyme that clears them. This is why high triglycerides so often travel with high blood sugar, high blood pressure, and a low HDL, a cluster we call metabolic syndrome. The good news buried in that connection is that the same changes that fix one tend to fix the others.

Diet and alcohol matter more here than for any other lipid. Sugar and refined carbohydrates, the white bread, the soda, the sweets, get converted by your liver straight into triglycerides, so a sweet tooth shows up on this line of the lab more than on any other. Alcohol does the same thing, and in some people even a moderate amount sends triglycerides soaring. Being sedentary compounds all of it.

A handful of medical conditions raise triglycerides on their own, and I always check for them, because fixing the root cause can solve the whole problem. An underactive thyroid, kidney disease that spills protein, poorly controlled diabetes, and pregnancy in the third trimester all push the number up. Several common medications do too, including steroids, estrogen, certain acne medications derived from vitamin A, some antipsychotics, certain HIV medications, thiazide water pills, and beta blockers. If one of your drugs is the driver, we look at whether there’s a better option.

Genetics set the stage underneath all of this. Many people carry a polygenic tendency, a scattering of small gene variants that leave them prone to high triglycerides when life piles on. A few inherited conditions run stronger. Familial combined hyperlipidemia, which affects roughly one in fifty to one in a hundred people, raises cholesterol and triglycerides together. Rarer still is familial chylomicronemia syndrome, where both copies of a key gene are broken and the clearing enzyme barely works at all. It’s very uncommon, on the order of one in a hundred thousand or fewer, but it drives triglycerides into the thousands from a young age and carries a real lifelong risk of pancreatitis.

How we lower triglycerides

The plan follows the number and your heart risk. Mild-to-moderate levels lean hard on lifestyle plus attention to your heart. Severe levels add medication aimed at protecting your pancreas. In almost every case, the same handful of daily habits does a surprising amount of the work.

Lifestyle does the heavy lifting here. Triglycerides respond to daily habits more dramatically than any other lipid, and I’ve watched people cut their number in half without a single pill. Losing even five to ten percent of your body weight helps. So does cutting sugar and refined carbs, trading soda and sweets for water and whole foods, and pulling back on alcohol, sometimes stopping it entirely for a stretch to see how much it was contributing. Regular activity, the kind that gets you a little winded most days, lowers triglycerides directly. And omega-3 fats from oily fish like salmon and sardines, or from a supplement, bring the number down. My guide to the Mediterranean diet lays out an eating pattern that hits most of these targets at once.

For a lot of people that’s the whole prescription, revisited at a follow-up lab in a few months. For others, I add medication, and which one depends on why we’re treating.

When the concern is your heart

For mild-to-moderate triglycerides, my main job is your long-term heart risk, and triglycerides are one input into that bigger picture. I calculate your ten-year risk of a heart attack or stroke, and if it’s high enough, a statin is the foundation. Statins lower triglycerides modestly, but that’s not why I prescribe them. They lower the harmful LDL and remnant particles that actually drive plaque, and they have the strongest evidence of any lipid drug for preventing heart attacks. You can read more in my piece on what statins do beyond lowering cholesterol.

When someone is already on the best statin dose they can tolerate but still has triglycerides in the 135 to 499 range along with other risk factors, I consider adding icosapent ethyl, sold as Vascepa. This is a purified, prescription-strength omega-3, and it’s a different animal from over-the-counter fish oil. In a large trial called REDUCE-IT, adding it at 2 grams twice a day to a statin lowered the rate of heart attacks, strokes, and cardiovascular deaths. The benefit was real and modest. Across the study, treating about 111 people for five years prevented one cardiovascular death. It’s a genuine add-on for the right patient. I don’t reach for it in everyone who has a slightly high number.

When the concern is your pancreas

Once triglycerides reach 500 and above, protecting your pancreas moves to the front of the line, and the diet gets stricter. I ask people to cut fat sharply, down to something like ten to fifteen percent of their daily calories, drop refined carbs, and stop alcohol, and I’ll often bring in a dietitian, because a change this steep is hard to do alone. We keep lowering LDL at the same time to protect the heart.

For the medication, fenofibrate, a drug in the fibrate family, is my usual choice at this level. Fibrates are the most effective drugs we have for pulling triglycerides down, and lowering the number reduces the risk of a pancreatitis attack. Prescription omega-3 at a full dose does similar work and is sometimes used alongside or instead. If triglycerides are very high and someone is already in the throes of acute pancreatitis that isn’t settling with standard hospital care, we bring in more aggressive measures, an insulin drip and occasionally a procedure called plasmapheresis that filters the fat out of the blood directly. Those are hospital tools for an emergency, not everyday treatment.

When diabetes and weight are in the picture

Because high triglycerides so often ride along with diabetes and extra weight, the drugs that treat those conditions frequently lower triglycerides as a bonus, and I fold that into the plan.

If you have diabetes or you’re carrying a lot of extra weight, some of the most useful moves aren’t triglyceride drugs at all. Getting blood sugar under better control lowers triglycerides on its own, so I pay attention to your A1c. The GLP-1 medications, the class that includes semaglutide, drive weight loss and improve the whole metabolic picture, triglycerides included, which I cover in my guide to GLP-1 medications for weight loss. The same is true of the broader metabolic care I walk through under SGLT2 inhibitors. Treating the engine that’s producing the triglycerides often works better than chasing the number head-on.

Newer drugs on the horizon

A new class of drugs targets the exact proteins that hold triglycerides high, and the early results are striking, especially for people with the rare genetic forms who’ve had few options.

For decades, people with the most extreme inherited triglyceride disorders had almost nothing that worked. That’s changing. A drug called olezarsen quiets a protein called apoC-III, which normally acts as a brake on the enzyme that clears triglycerides. Take the brake off, and the body clears the fat far better. In trials, olezarsen dropped triglycerides dramatically, including in patients with familial chylomicronemia syndrome who’d been stuck in the thousands. I wrote about its FDA approval in more detail in this post on olezarsen. Another class, aimed at a protein called ANGPTL3, is working through trials on a similar principle. For most people, lifestyle and the standard medications remain the answer, but for those with severe genetic disease, real help is finally arriving.

Common questions

Are high triglycerides as dangerous as high cholesterol?

They’re a different kind of risk, and it depends on how high. At mild-to-moderate levels, high triglycerides raise your heart risk, though usually less sharply than a high LDL does, and they’re a signal that harmful remnant particles are circulating. At very high levels, above about 1,000, they become dangerous in a more immediate way by threatening the pancreas. Either way they’re worth treating, and the treatment depends on the number.

Can I lower my triglycerides without medication?

Very often, yes, and more than with any other lipid. Triglycerides respond strongly to weight loss, cutting sugar and refined carbs, limiting alcohol, exercising, and adding omega-3s. Plenty of my patients bring a mildly or moderately high number back to normal on habits alone. The higher the starting number and the more heart risk you carry, the more likely we add medication on top.

Does drinking alcohol really affect triglycerides that much?

For some people, dramatically. Alcohol is a potent trigger, and in someone prone to high triglycerides, even a few drinks can push the number up sharply. If your triglycerides are high, cutting back or stopping for a while is one of the fastest experiments we can run, and the lab will show us how much it was contributing.

Do I need to fast before a triglyceride test?

Not always, but fasting gives the cleanest reading. A recent meal raises triglycerides on its own, which is why the cutoff for a non-fasting sample is a little higher. If your number comes back high on a non-fasting draw, I’ll usually confirm it with a fasting test before making decisions.

Should my family get tested?

If your triglycerides are very high or high from a young age, yes, because some of these disorders are inherited. Screening relatives can catch a problem early, before it causes a pancreatitis attack, and let us get ahead of it.

Let’s look at your triglycerides together

If your triglycerides came back high and you’re not sure what it means for you, that’s a good reason to sit down and sort it out. The right plan depends on how high the number is, what’s driving it, and what else is happening with your heart, and it usually starts with changes you can make yourself.

If you’d like help understanding your lipid panel or building a plan, our office is glad to help. To get in touch, visit our practice website. For coordinated cardiovascular care, we work with the team at San Diego Cardiovascular Associates. For the wider picture of cholesterol and how we lower it, see my guides to LDL cholesterol, ezetimibe, and the Mediterranean diet.

Getting your lipids right is one of the highest-value things we do in cardiology, and the plan is always built around your risk and your life. If you’d like that sorted in person, I see patients in Encinitas and from across San Diego.

References

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2. Subramanian, Savitha. "Approach to the Patient With Moderate Hypertriglyceridemia." Journal of Clinical Endocrinology and Metabolism 107, no. 6 (2022): 1686-1697.

3. Oh, Robert C., Evan T. Trivette, and Katie L. Westerfield. "Management of Hypertriglyceridemia: Common Questions and Answers." American Family Physician 102, no. 6 (2020): 347-354.

4. Miller, Michael, Neil J. Stone, Christie Ballantyne, et al. "Triglycerides and Cardiovascular Disease: A Scientific Statement From the American Heart Association." Circulation 123, no. 20 (2011): 2292-2333.

5. Bhatt, Deepak L., P. Gabriel Steg, Michael Miller, et al. "Cardiovascular Risk Reduction with Icosapent Ethyl for Hypertriglyceridemia." New England Journal of Medicine 380, no. 1 (2019): 11-22.

6. Simha, Vinaya. "Management of Hypertriglyceridemia." BMJ 371 (2020): m3109.

7. Hegele, Robert A., Jan Borén, Henry N. Ginsberg, et al. "Rare Dyslipidaemias, From Phenotype to Genotype to Management: A European Atherosclerosis Society Task Force Consensus Statement." Lancet Diabetes & Endocrinology 8, no. 1 (2020): 50-67.

8. Watts, Gerald F. "Shooting the Messenger to Treat Hypertriglyceridemia." New England Journal of Medicine 390, no. 19 (2024): 1818-1820.

9. Rosenson, Robert S., Arshad Shaik, and Wenliang Song. "New Therapies for Lowering Triglyceride-Rich Lipoproteins: JACC Focus Seminar 3/4." Journal of the American College of Cardiology 78, no. 18 (2021): 1817-1830.

Published on damianrasch.com. The above information was composed by Dr. Damian Rasch, drawing on individual insight and bolstered by digital research and writing assistance. The information is for educational purposes only and does not constitute medical advice.