High cholesterol and triglycerides respond well to a combination of dietary changes, regular exercise, and, when needed, medication. Most people can expect measurable improvements in blood work after 8 to 12 weeks of consistent lifestyle changes. The specific steps that work best depend on whether your main problem is LDL cholesterol, triglycerides, or both, since the two respond to somewhat different strategies.
Know Your Numbers First
For adults, an optimal LDL cholesterol level is below 100 mg/dL. Triglycerides are considered normal below 150 mg/dL, borderline high between 150 and 199 mg/dL, and high at 200 mg/dL or above. If both numbers are elevated, you’re dealing with a pattern that significantly raises cardiovascular risk, and tackling it from multiple angles produces the best results.
People with certain conditions carry even higher risk. The 2025 ACC/AHA guidelines identify type 2 diabetes, familial hypercholesterolemia, elevated lipoprotein(a), and a history of cardiovascular events as factors that call for more aggressive LDL targets, sometimes as low as 55 to 69 mg/dL.
Eat More Soluble Fiber
Soluble fiber is one of the most reliable dietary tools for lowering LDL cholesterol. A large meta-analysis of randomized controlled trials found that every 5 grams per day of soluble fiber lowered LDL by about 5.5 mg/dL. Doubling that to 10 grams per day dropped LDL by nearly 11 mg/dL, and the researchers suggested aiming for 15 grams per day for the best lipid outcomes.
Good sources include oats, barley, beans, lentils, apples, citrus fruits, and psyllium husk. A bowl of oatmeal with an apple and a half-cup of lentils at lunch gets you close to 10 grams of soluble fiber. Psyllium supplements can fill the gap if your diet falls short. The key is consistency: these reductions show up in blood work over weeks, not days.
Cut Back on Sugar and Refined Carbs
Triglycerides respond more to sugar and refined carbohydrates than to dietary fat. When your liver gets flooded with excess sugar, it converts it into triglycerides and ships them into your bloodstream. Cutting back on sweetened drinks, fruit juice, white bread, pastries, and other processed carbohydrates is often the single most effective change for bringing triglycerides down. Replacing those calories with vegetables, whole grains, lean protein, and healthy fats gives your liver less raw material to work with.
Be Strategic About Alcohol
Alcohol and triglycerides have a complicated relationship. Moderate drinking (one to three glasses a day for men, one to two for women) has minimal effect on fasting triglyceride levels in healthy people. But combining alcohol with a fatty meal amplifies the triglyceride spike dramatically. In one experiment, a high-fat meal alone raised triglycerides by 70%, but adding about 40 grams of alcohol (roughly three drinks) to that same meal caused a 180% spike.
For people who already have elevated triglycerides, the picture is more concerning. Among patients with triglycerides above 1,000 mg/dL, excessive alcohol was a factor in nearly a quarter of cases, and in 43% of those with the highest levels. If your triglycerides are already high, reducing or eliminating alcohol is one of the fastest ways to see improvement.
Exercise for HDL and Triglyceride Balance
Regular aerobic exercise raises HDL (the protective cholesterol) and can lower triglycerides, though the effects depend on intensity and consistency. A 12-week moderate-intensity exercise program increased HDL cholesterol by about 6.6% in healthy young men and boosted apolipoprotein A-I, a protein that helps HDL do its job, by nearly 12%. Adding a higher-intensity phase with both strength training and endurance work pushed HDL up further.
You don’t need to train like the participants in that study, who averaged over 9 hours per week. The general target that most guidelines support is 150 minutes per week of moderate activity, such as brisk walking, cycling, or swimming. That’s about 30 minutes on most days. Adding two sessions of resistance training per week provides additional metabolic benefits, improving how your body processes fats and sugars even at rest.
Consider Omega-3 Fatty Acids
Fish oil supplements are widely marketed for heart health, but there’s an important distinction between over-the-counter doses and what actually lowers triglycerides. The American Heart Association concluded that prescription omega-3 fatty acids at a dose of 4 grams per day (containing more than 3 grams of EPA plus DHA) are effective for reducing triglycerides. That’s far more than a typical store-bought fish oil capsule, which usually contains 300 to 500 milligrams of EPA and DHA combined.
Over-the-counter supplements are not FDA-reviewed for triglyceride lowering, and taking enough capsules to reach 4 grams per day on your own can introduce quality and dosing concerns. If your triglycerides are significantly elevated, prescription-strength omega-3s are a conversation worth having with your doctor. For modest triglyceride elevations, eating fatty fish like salmon, mackerel, or sardines two to three times per week provides a meaningful dietary boost.
When Medication Becomes Necessary
Lifestyle changes are the foundation, but some people need medication to reach safe lipid levels. Statins remain the primary treatment for high LDL cholesterol, and they work by reducing the amount of cholesterol your liver produces. Most people tolerate them well, and they’re typically taken as a single daily pill.
For triglycerides that stay elevated despite diet and exercise changes, doctors sometimes add a fibrate or prescription omega-3 to a statin regimen. This combination is most common in people with obesity, metabolic syndrome, insulin resistance, or diabetes, where complex lipid abnormalities make a single medication insufficient. People at especially high cardiovascular risk, such as those with polyvascular disease or recurrent heart events, may need more intensive treatment with stricter LDL goals.
How Long Before You See Results
Give lifestyle changes at least 8 to 12 weeks before rechecking your lipid panel. That’s enough time for dietary shifts and exercise to produce measurable changes in blood work. Triglycerides often respond faster than LDL cholesterol, sometimes dropping noticeably within a few weeks of cutting sugar and alcohol. LDL tends to move more slowly, especially if the changes are purely dietary.
If your numbers haven’t improved enough after three months of genuine effort, that doesn’t mean the changes were wasted. Lifestyle modifications reduce cardiovascular risk through mechanisms beyond what a lipid panel shows, including lower inflammation, improved blood vessel function, and better blood sugar control. But it does signal that medication may be a helpful addition, not a replacement for the habits you’ve built.