Dietary changes can lower triglycerides significantly, often within weeks. A normal triglyceride level is below 150 mg/dL, while levels between 150 and 199 are considered mildly elevated, 200 to 499 moderately elevated, and anything above 500 severe. If your numbers are high, what you eat and drink every day is the single most direct lever you have.
Cut Back on Sugar and Refined Carbs First
If you make one change, make it this one. Excess sugar, particularly fructose, is converted into triglycerides by the liver at a remarkably efficient rate. Your liver processes fructose about 10 times faster than it processes glucose, and much of that fructose gets converted directly into fat. This is why sugary drinks, fruit juices, candy, and foods made with high-fructose corn syrup have such an outsized effect on triglyceride levels.
Refined carbohydrates like white bread, white rice, pastries, and sugary cereals create the same problem. Your body breaks them down quickly into simple sugars, which flood the liver and get turned into triglycerides. Swapping these for whole grains, vegetables, and legumes slows that process considerably. In one study, people who restricted carbohydrates for just two weeks (while losing about 4% of their body weight) saw their liver triglyceride stores drop by 55%, compared to 28% in a group that simply cut calories without specifically targeting carbs.
Eat More Omega-3 Fats
The omega-3 fatty acids found in fatty fish are one of the most well-documented dietary tools for lowering triglycerides. Salmon, mackerel, sardines, herring, and anchovies are the richest sources. The American Heart Association notes that high-dose omega-3 supplements (providing more than 3 grams per day of EPA and DHA combined) can reduce triglycerides by 30% or more in people with very high levels.
That 3-gram therapeutic dose is difficult to get from food alone and typically requires prescription-strength supplements. But you don’t need to hit that threshold to benefit. Eating fatty fish two to three times a week adds meaningful amounts of omega-3s to your diet and contributes to an overall eating pattern that keeps triglycerides in check. Plant sources of omega-3s like walnuts, flaxseed, and chia seeds contain a different form (ALA) that your body converts to EPA and DHA inefficiently, so they’re helpful but not a direct substitute for fish.
Add Soluble Fiber
Soluble fiber, the kind that dissolves in water and forms a gel-like substance in your gut, helps manage blood lipid levels including triglycerides. It slows the absorption of sugars and fats from your digestive tract, which means less raw material reaching your liver all at once. Good sources include oats, barley, beans, lentils, apples, citrus fruits, and Brussels sprouts.
There isn’t a single magic number for daily fiber intake specifically tied to triglyceride reduction, but most adults fall well short of the general recommendation of 25 to 30 grams per day. Adding a serving of oatmeal at breakfast, a cup of beans at lunch, or an apple as a snack can meaningfully increase your soluble fiber intake without requiring a dramatic overhaul of your meals.
Limit or Eliminate Alcohol
Alcohol and triglycerides have a complicated but clearly negative relationship. Drinking increases triglycerides through multiple pathways: it can boost production of triglyceride-rich particles in the liver, and it delays the clearance of dietary fat from your bloodstream. Even moderate drinking can raise levels noticeably in some people.
If your triglycerides are elevated, cutting alcohol is one of the fastest ways to see improvement. For people with levels above 500 mg/dL, most guidelines recommend eliminating alcohol entirely. If your levels are only mildly elevated, reducing intake to occasional, small amounts may be sufficient, but the effect varies from person to person. Some people are far more sensitive to alcohol’s triglyceride-raising effects than others.
Lose a Small Amount of Weight
You don’t need to reach an ideal body weight to see results. Losing just 4 to 5% of your body weight (about 8 to 10 pounds for someone who weighs 200) produces substantial drops in triglycerides. The key detail: how you lose that weight matters. Reducing carbohydrates appears to lower triglycerides more effectively than simply cutting calories by the same amount, even when total weight loss is similar. This aligns with the liver’s role in converting excess carbohydrates into triglycerides.
This doesn’t mean you need an extreme low-carb diet. It means that if you’re choosing between cutting 500 calories of bread and pasta versus 500 calories of olive oil and avocado, the carb reduction will likely do more for your triglyceride numbers specifically.
Choose Better Fats, Not Necessarily Less Fat
The old advice to simply eat less fat is outdated. A meta-analysis published in the American Heart Association’s journals found that when total fat intake stays the same, swapping saturated fat for monounsaturated or polyunsaturated fat doesn’t significantly change triglyceride levels on its own. That swap is still worthwhile for other cardiovascular reasons, but for triglycerides specifically, the bigger driver is total carbohydrate and sugar intake rather than the type of fat on your plate.
That said, a dietary pattern built around healthy fats, like the Mediterranean diet, does lower triglycerides. This is likely because the pattern as a whole replaces refined carbs and sugar with vegetables, legumes, nuts, fish, and olive oil. In studies of people with high cholesterol, variations of the Mediterranean diet combined with cholesterol-lowering foods reduced triglycerides by roughly 13 to 23 mg/dL. The benefit comes from the entire pattern working together rather than any single fat source.
How Quickly You Can Expect Results
Triglycerides respond to dietary changes faster than most other blood markers. Unlike LDL cholesterol, which can take months to shift meaningfully, triglycerides can drop within two to four weeks of consistent changes. Clinical guidelines consider triglyceride levels “persistent” only if they remain elevated after 4 to 12 weeks of lifestyle changes, which means your doctor expects to see movement in that window.
A single large meal high in sugar or alcohol can spike triglycerides temporarily, which is why blood tests are done after fasting. The flip side of that sensitivity is encouraging: your daily choices have an immediate, measurable effect. Stacking the strategies above (cutting sugar and refined carbs, eating more fish and fiber, reducing alcohol, and losing a modest amount of weight) produces compounding benefits. Most people with mildly or moderately elevated triglycerides can bring their numbers into a normal range through diet alone.