Foods high in added sugar, refined carbohydrates, saturated fat, and alcohol are the primary drivers of high triglycerides. Your liver converts excess calories from these sources into triglycerides, a type of fat that circulates in your blood. A healthy triglyceride level is below 150 mg/dL, borderline high falls between 150 and 199 mg/dL, and anything above 200 mg/dL is considered high.
What surprises many people is that sugar and starchy carbs raise triglycerides more dramatically than dietary fat does. Understanding which foods have the biggest impact gives you a clear path to bringing your numbers down.
Added Sugar and Fructose
Sugar is the single biggest dietary contributor to high triglycerides, and fructose is the worst offender. When fructose reaches your liver, it bypasses the normal checks that regulate glucose metabolism. Instead, it floods the liver with raw material for fat production. Your liver ramps up its output of triglyceride-rich particles (called VLDL) and pushes them into your bloodstream. This happens even without the involvement of insulin, meaning fructose can spike triglycerides on its own, though insulin resistance makes the problem worse over time.
The American Heart Association recommends no more than 100 calories per day of added sugar for women (about 6 teaspoons) and 150 calories per day for men (about 9 teaspoons). For context, a single can of regular soda contains roughly 10 teaspoons.
Common sources of added sugar that raise triglycerides include table sugar, high-fructose corn syrup, honey, maple syrup, and agave nectar. Many people assume honey or maple syrup are safer alternatives, but they raise triglycerides just as effectively as refined sugar. The label matters more than the branding.
Sugary Drinks
Liquid sugar deserves its own category because it’s absorbed faster and consumed in larger quantities than sugar in solid food. Regular soda, sweet tea, fruit juice, lemonade, energy drinks, and flavored coffee drinks all deliver a concentrated sugar load that your liver converts directly into triglycerides.
Research on children found a clear dose-response relationship: those drinking seven or more servings of sugar-sweetened beverages per week had meaningfully higher triglyceride levels than those drinking fewer than two servings. The same pattern holds in adults. Fruit juice, despite its reputation as a health food, contains nearly as much fructose as soda and has a comparable effect on triglycerides. Swapping sugary drinks for water, unsweetened tea, or black coffee is one of the simplest and most effective changes you can make.
Refined Carbohydrates and Starchy Foods
White bread, white rice, pasta, cereal, pastries, and crackers are all refined carbohydrates that your body breaks down quickly into glucose. When you eat more of these than your cells need for energy, your liver converts the surplus into triglycerides. The speed of digestion matters: refined carbs cause a rapid blood sugar spike, which triggers a large insulin response, which in turn promotes fat storage.
Starchy vegetables like potatoes also play a role. A baked russet potato has a glycemic load of 33, one of the highest of any single food serving. White boiled potatoes come in at 25. These numbers mean they raise blood sugar quickly and substantially, giving your liver plenty of material to work with. Corn, while less extreme, still ranks above most non-starchy vegetables.
A low glycemic load diet, one that favors whole grains, legumes, nuts, and non-starchy vegetables over potatoes, white rice, and white bread, has been shown to lower triglycerides more effectively than a standard low-fat diet in clinical trials. In one six-month study of obese adults, the low glycemic load group saw significantly greater triglyceride reductions even though both groups lost similar amounts of weight.
Saturated Fat
While sugar tends to be the bigger trigger, saturated fat also raises triglycerides, particularly when consumed in excess. A three-week overfeeding study found that people who ate extra saturated fat (from sources like butter, cheese, and fatty meat) had increased concentrations of very small VLDL particles, the triglyceride-carrying lipoproteins your liver produces. Their LDL particles also became more saturated and more prone to clumping together, a pattern linked to cardiovascular risk.
People who overate unsaturated fat in the same study did not show the same increases. This doesn’t mean unsaturated fat is free of consequences, but it highlights that the type of fat you eat matters for triglycerides. Major sources of saturated fat include red meat, full-fat dairy, butter, coconut oil, palm oil, and baked goods made with these ingredients.
Ultra-Processed Foods
Packaged snacks, frozen meals, fast food, instant noodles, chips, and most convenience foods fall into the ultra-processed category. These products typically combine refined carbs, added sugars, and unhealthy fats in a single package, hitting multiple triglyceride-raising pathways at once.
A prospective study of older adults tracked participants for five to seven years and found that those eating the most ultra-processed food had more than 2.5 times the odds of developing high triglycerides compared to those eating the least. That’s a striking increase in risk from a dietary pattern rather than any single nutrient. The problem isn’t just one ingredient but the combination of sugar, refined starch, and fat in forms that are easy to overconsume.
Reading labels helps. Many foods that don’t taste sweet still contain high-fructose corn syrup, maltodextrin, or other added sugars. Baked beans, flavored yogurt, salad dressings, granola bars, and bread often carry hidden sugar that adds up across a day.
Alcohol
Alcohol raises triglycerides primarily by increasing the liver’s production of VLDL particles. In people who are overweight, this effect is amplified because the body also has a harder time clearing dietary fat from the bloodstream while processing alcohol. The result is a double hit: more triglycerides being made and slower removal of existing ones.
Even moderate drinking can elevate triglycerides in susceptible individuals, and heavy drinking is one of the most common causes of very high levels (above 500 mg/dL). Beer and mixed drinks are especially problematic because they add carbohydrates and sugar on top of the alcohol itself. If your triglycerides are elevated, reducing or eliminating alcohol is one of the most effective interventions available.
Putting It Together
The foods that raise triglycerides share a common thread: they deliver more energy to your liver than it can use immediately, and the liver stores that excess as fat in your blood. Sugar and refined carbs are the most potent triggers because they’re absorbed quickly and converted to fat efficiently. Saturated fat, alcohol, and ultra-processed foods compound the problem through overlapping mechanisms.
The most impactful changes, roughly in order of effect, are cutting sugary drinks, reducing added sugar below the AHA’s daily limits, replacing refined grains with whole grains and legumes, limiting alcohol, and choosing unsaturated fats over saturated ones. You don’t need to eliminate every item on this list overnight. For most people, triglyceride levels respond to dietary changes within a few weeks, and even partial improvements in eating patterns produce measurable results.