The most important thing to avoid for high cholesterol is excess saturated fat, which directly reduces your liver’s ability to pull LDL (“bad”) cholesterol out of your bloodstream. But saturated fat isn’t the only culprit. Added sugars, alcohol, processed meats, and certain cooking methods all push your lipid numbers in the wrong direction. Here’s what to cut back on and why it matters.
Saturated Fat: The Biggest Driver
Saturated fat raises LDL cholesterol through a specific mechanism: it decreases the number of LDL receptors on your liver cells. These receptors are responsible for grabbing LDL particles out of your blood and clearing them. When you eat a lot of saturated fat, your liver produces fewer of these receptors, so more LDL stays circulating. When you cut back, the number of receptors increases and your liver clears LDL more efficiently.
The Dietary Guidelines for Americans recommend keeping saturated fat below 10% of your daily calories. For a typical 2,000-calorie diet, that’s about 20 grams per day. If you eat less than 2,000 calories, your limit is proportionally lower. The biggest sources in most diets are butter, fatty cuts of beef and pork, full-fat cheese, cream, and baked goods made with shortening or butter.
Not All Dairy Is Equal
You might assume all full-fat dairy is off the table, but the picture is more nuanced. A meta-analysis of 18 randomized controlled trials involving over 1,600 adults found that consuming full-fat milk, yogurt, and cheese was not associated with meaningful changes to total, HDL, or LDL cholesterol levels. Fermented dairy products like yogurt and cheese contain probiotics that appear to alter how the liver handles fat synthesis, which may offset some of the saturated fat they contain.
Butter is a different story. It’s concentrated saturated fat without the fermentation benefits, and consistently raises LDL in clinical trials. If you’re choosing between spreading butter on toast and putting cheese on a sandwich, the cheese is the better option for your cholesterol.
Tropical Oils: Coconut and Palm
Coconut oil has a health halo that isn’t entirely deserved. It’s about 49% lauric acid, which raises both HDL (“good”) cholesterol and LDL cholesterol. The HDL boost sounds appealing, but rising LDL still increases cardiovascular risk. Palm oil is rich in palmitic acid, which also raises LDL. Both of these oils are common in packaged snacks, nondairy creamers, and granola bars, so check ingredient labels if you’re trying to manage your numbers.
Trans Fats Still Linger
Artificial trans fats are the single worst type of fat for cholesterol. They raise LDL, lower HDL, and promote inflammation in blood vessels. The FDA banned manufacturers from adding partially hydrogenated oils (the main source of artificial trans fat) to foods as of June 2018. That’s the good news.
The catch is that trans fat hasn’t disappeared entirely. Small amounts occur naturally in meat and dairy, and trace levels exist in other edible oils. More importantly, food labels in the U.S. can round down to “0g trans fat” if a serving contains less than 0.5 grams. If you eat multiple servings of a product, or several of these products in a day, those trace amounts add up. Look for “partially hydrogenated” anywhere in the ingredient list as a red flag.
Added Sugar and Refined Carbs
Many people focus exclusively on fat when managing cholesterol, but sugar plays a major role too. When you consume a lot of refined carbohydrates and added sugar, your body increases insulin production. Over time, this promotes insulin resistance, which triggers a characteristic pattern: triglycerides rise and HDL cholesterol drops. That combination is a significant cardiovascular risk factor, even if your LDL looks acceptable.
Low-carbohydrate diets have been shown to raise HDL cholesterol, likely through a combination of weight loss and improved insulin sensitivity. You don’t need to go extreme. Cutting back on sugary drinks, white bread, pastries, and sweetened cereals makes a measurable difference. Swapping refined grains for whole grains and choosing whole fruit over fruit juice are practical starting points.
Processed Meats
Bacon, sausage, hot dogs, and deli meats are a triple threat for heart health. They’re high in saturated fat, loaded with sodium, and preserved with nitrates and nitrites. Research has linked nitrate intake from processed red meat to a striking share of cardiovascular deaths. One analysis found that 72% of cardiovascular disease deaths in the study population were accounted for by nitrate intake from processed red meat consumption.
The sodium content also matters. High sodium intake raises blood pressure, which compounds the damage that high cholesterol does to your arteries. If you eat processed meat regularly, even reducing your intake to once or twice a week rather than daily can lower your overall risk.
Alcohol
Alcohol has a direct and powerful effect on triglycerides. When you drink, your liver converts the calories from alcohol into triglycerides. Fat accumulates in both the liver and the bloodstream, raising your risk of cardiovascular disease, fatty liver disease, and pancreatitis.
If your triglycerides are already elevated, limiting alcohol as much as possible is one of the fastest ways to bring them down. General guidelines define moderate intake as no more than two drinks per day for men and one for women, but people with high triglycerides often benefit from cutting back further. Binge drinking is especially harmful, as it causes sharp, sudden spikes in triglyceride levels.
What About Eggs and Dietary Cholesterol?
For years, eggs were considered dangerous for people with high cholesterol. That advice has shifted substantially. The 2015 Dietary Guidelines Advisory Committee found only a weak relationship between cholesterol in food and cholesterol levels in the blood, and stated that eggs should be considered part of a healthy diet. Your liver produces the vast majority of the cholesterol in your bloodstream, and for most people, eating cholesterol-rich foods has a modest impact on blood levels.
That said, some people are “hyper-responders” whose blood cholesterol rises more noticeably after eating cholesterol-rich foods. If your LDL stays stubbornly high despite other dietary changes, it’s worth tracking whether reducing eggs or organ meats makes a difference for you personally.
Deep-Fried and High-Heat Cooking
How food is cooked matters, not just what food you eat. Deep frying creates cholesterol oxidation products, which are chemically altered forms of cholesterol that are more harmful to your arteries than regular cholesterol. In one study comparing raw and cooked salmon, fried samples contained roughly 3 to 4 times the oxidized cholesterol of raw fish, with roasted samples containing even more. Among these oxidation products, one called cholestanetriol, which is particularly toxic to cells lining your blood vessels, appeared only in cooked samples.
Frying in soybean oil produced slightly more oxidized cholesterol than frying in olive oil. For everyday cooking, baking, steaming, poaching, and sautéing at moderate temperatures are gentler options that preserve the nutritional quality of your food without generating as many harmful byproducts.
Practical Priorities
If you’re trying to figure out where to start, focus on the changes that move the needle most. Replacing saturated fat with unsaturated fat (olive oil, nuts, avocado, fatty fish) is the single most effective dietary change for lowering LDL. Cutting back on added sugar and refined carbs addresses triglycerides and HDL. Limiting alcohol tackles triglycerides directly. And reducing processed meat lowers your exposure to saturated fat, sodium, and harmful preservatives all at once.
These changes don’t require perfection. Shifting your overall pattern matters more than eliminating any one food completely. A diet where most of your fat comes from plants and fish, most of your carbs come from whole grains and vegetables, and processed foods are occasional rather than daily will move your numbers in the right direction.