Lowering cholesterol comes down to a combination of dietary changes, regular physical activity, and in some cases, medication. Most people can reduce their LDL (“bad”) cholesterol by 10 to 30% through lifestyle changes alone, and the improvements start within weeks of making consistent shifts.
Dietary Changes That Lower LDL
What you eat has a direct effect on how much cholesterol circulates in your blood. The most impactful single change is reducing saturated fat. The American Heart Association’s 2026 dietary guidance recommends keeping saturated fat below 10% of your daily calories. For someone eating 2,000 calories a day, that means no more than about 22 grams. Saturated fat is concentrated in red meat, full-fat dairy, butter, and coconut oil. Replacing these with unsaturated fats from olive oil, nuts, avocados, and fatty fish shifts your lipid profile in the right direction.
Soluble fiber is another powerful tool. It works by binding to cholesterol in your digestive tract and pulling it out of your body before it reaches your bloodstream. Good sources include oats, barley, beans, lentils, apples, and flaxseed. Aiming for 5 to 10 grams of soluble fiber per day can meaningfully lower LDL.
A Mediterranean-style eating pattern, built around vegetables, whole grains, legumes, fish, nuts, and olive oil, has been shown to significantly reduce both total cholesterol and triglycerides. This isn’t a short-term diet. It’s a sustainable way of eating that improves multiple heart disease risk factors at once, including blood sugar regulation and body weight. You don’t need to follow it perfectly. Even shifting two or three meals a week toward this pattern makes a difference.
How Exercise Improves Your Numbers
Physical activity primarily raises HDL (“good”) cholesterol and lowers triglycerides. The effect on LDL is more modest, but the overall impact on cardiovascular risk is substantial. Federal physical activity guidelines recommend 150 to 300 minutes per week of moderate-intensity aerobic exercise, or 75 to 150 minutes of vigorous activity.
Moderate intensity means activities like brisk walking, cycling on flat terrain, or swimming at a steady pace, where you can talk but not sing. Even 30 minutes a day has been shown to boost HDL levels. The sweet spot for improving cholesterol appears to be low-to-moderate intensity sustained over a longer duration, roughly 50 to 70% of your maximum effort. Short, high-intensity bursts have less impact on lipid levels.
One interesting finding: a single exercise session can raise HDL by 4 to 43% and lower triglycerides by 3 to 15%. These changes appear 18 to 24 hours after the workout and can last up to 72 hours. That’s a strong argument for exercising regularly rather than sporadically. Consistency keeps those benefits rolling.
Supplements Worth Considering
Plant Sterols and Stanols
Plant sterols and stanols are naturally occurring compounds found in small amounts in grains, vegetables, fruits, and nuts. They’re also added to certain margarines, orange juices, and yogurt drinks. They work by competing with cholesterol for absorption in your gut. When sterols take up space in the absorption process, less dietary cholesterol makes it into your bloodstream.
Current guidelines recommend about 2 grams per day, which can lower LDL by roughly 10%. Studies show a consistent dose-response relationship: intakes between 0.6 and 3.3 grams per day reduce LDL by 6 to 12%. They work best when combined with other dietary changes rather than used as a standalone fix. You can get 2 grams through fortified foods or supplements, and the effect typically shows up within two to three weeks.
Omega-3 Fatty Acids
Omega-3s primarily target triglycerides rather than LDL cholesterol. Every additional gram of omega-3s per day lowers triglycerides by about 5.9 mg/dL, with a stronger effect in people who start with higher levels. For people with significantly elevated triglycerides, the American Heart Association supports prescription omega-3s at 4 grams per day, which produce a more substantial reduction.
For general heart health, eating fatty fish like salmon, mackerel, or sardines two to three times per week provides a meaningful dose. Over-the-counter fish oil supplements can help, but they deliver lower concentrations than prescription formulations and are best suited for modest triglyceride improvements rather than dramatic reductions.
When Medication Becomes Necessary
Lifestyle changes are the foundation, but some people need medication to reach safe cholesterol levels. This is especially true if you have genetic factors driving your cholesterol up, existing heart disease, or multiple risk factors stacking your odds.
Statins remain the first-line medication for most people. The U.S. Preventive Services Task Force recommends starting a statin for adults aged 40 to 75 who have at least one cardiovascular risk factor (high cholesterol, diabetes, high blood pressure, or smoking) and a 10-year heart disease risk of 10% or greater. For those with a risk between 7.5% and 10%, the decision is more individualized, weighing personal preferences and values. These guidelines don’t apply to people with LDL above 190 mg/dL, who typically need treatment regardless of their calculated risk score.
For people who can’t tolerate statins or whose LDL remains too high despite maximum statin therapy, newer injectable medications called PCSK9 inhibitors are an option. These drugs block a protein that normally removes LDL receptors from the liver, allowing the liver to clear more cholesterol from the blood. They’re typically reserved for people with existing cardiovascular disease whose LDL stays above 55 to 70 mg/dL on statins, or those with very high baseline LDL (190 mg/dL or above).
What to Tackle First
If your cholesterol is mildly elevated and you don’t have heart disease, start with the lifestyle changes that offer the biggest return. Cutting back on saturated fat, adding soluble fiber, and getting regular moderate exercise can collectively lower LDL by 20 to 30% over two to three months. Adding plant sterols can push that further. Get your levels rechecked after 8 to 12 weeks of consistent changes to see where you stand.
If your LDL is above 190 mg/dL, or you have existing heart disease or diabetes, lifestyle changes alone are unlikely to be enough. In those cases, medication and diet work together, and the combination is more effective than either approach on its own. The goal isn’t perfection in any single category. It’s stacking several moderate changes that compound into a meaningful reduction in your overall risk.