A heart-healthy diet centers on whole, minimally processed foods: vegetables, fruits, whole grains, lean proteins, healthy fats, and legumes. The specifics matter more than any single “superfood,” and two well-studied dietary patterns, the Mediterranean diet and the DASH diet, consistently show the strongest evidence for reducing cardiovascular disease. Both share a common foundation but differ in ways that let you choose the approach that fits your life.
Two Proven Dietary Patterns
The Mediterranean and DASH diets are the most researched eating patterns for heart health, and both are rich in fruits, vegetables, whole grains, legumes, and nuts. Where they diverge is in how they handle fat.
The Mediterranean diet is higher in total fat, drawing heavily from olive oil (rich in heart-protective compounds called polyphenols) and fatty fish. Its benefits come largely from anti-inflammatory and antioxidant properties tied to plant foods, olive oil, and moderate wine intake, though the stance on alcohol has shifted significantly in recent years. This pattern tends to work well for people who enjoy cooking with oil, eating fish, and building meals around vegetables and grains.
The DASH diet (Dietary Approaches to Stop Hypertension) was designed specifically for Western populations and keeps total fat around 27% of daily calories. It emphasizes lean meats, low-fat dairy, and whole grains while loading up on minerals like calcium, magnesium, and potassium that directly help regulate blood pressure. If you’re primarily concerned about high blood pressure, DASH was built for that purpose.
You don’t need to follow either one rigidly. The overlapping principles are what matter most: eat mostly plants, choose whole grains over refined ones, limit processed food, and get your fats from quality sources.
Fats That Help and Fats That Harm
Not all fats affect your heart the same way. Saturated fat, found in red meat, butter, cheese, and full-fat dairy, raises LDL (“bad”) cholesterol. Current guidelines recommend keeping saturated fat below 10% of your total daily calories. On a 2,000-calorie diet, that’s about 22 grams, roughly the amount in a cheeseburger and a tablespoon of butter.
Replacing saturated fat with unsaturated fat is one of the most impactful swaps you can make. Extra-virgin olive oil, avocados, nuts, and seeds all provide monounsaturated fats that actively help lower cholesterol when they replace saturated sources. Omega-3 fatty acids, found in fatty fish like salmon, mackerel, sardines, and trout, reduce inflammation and help protect against irregular heart rhythms. The American Heart Association recommends eating fish rich in omega-3s at least twice a week, with a serving size of about 3 ounces cooked (roughly the size of a deck of cards).
Trans fats, still found in some fried foods and commercially baked goods, are the worst offenders. They raise LDL cholesterol and lower HDL (“good”) cholesterol simultaneously. Check ingredient lists for “partially hydrogenated oils” and avoid them entirely.
Fiber’s Role in Lowering Cholesterol
Soluble fiber physically binds to cholesterol in your digestive tract and carries it out of your body before it reaches your bloodstream. Getting 5 to 10 grams of soluble fiber a day measurably decreases LDL cholesterol. That’s achievable with a bowl of oatmeal (about 2 grams of soluble fiber), an apple (1 gram), and a half-cup of beans (2 to 3 grams).
The best sources of soluble fiber include oats, barley, lentils, beans, eggplant, okra, apples, oranges, and berries. These foods also tend to be filling, which makes it easier to maintain a healthy weight, another major factor in heart disease risk.
Sodium, Sugar, and Blood Pressure
The recommended daily sodium limit is less than 2,300 milligrams, about one teaspoon of table salt. Most people consume well over that, and the majority doesn’t come from the salt shaker. It’s hidden in bread, deli meats, canned soups, frozen meals, condiments, and restaurant food. Reading nutrition labels and cooking more meals at home are the two most effective ways to cut sodium without obsessing over it.
Added sugars are a less obvious threat to your heart. The American Heart Association recommends women limit added sugars to less than 100 calories per day (about 6 teaspoons) and men to less than 150 calories per day (about 9 teaspoons). A single can of soda contains roughly 10 teaspoons. Excess sugar drives weight gain, raises triglycerides, and promotes the kind of chronic inflammation that damages blood vessels over time. The biggest culprits are sugary drinks, flavored yogurts, breakfast cereals, sauces, and packaged snacks.
Plant Sterols and the Portfolio Diet
Plant sterols (also called phytosterols) are naturally occurring compounds in nuts, soybeans, peas, and canola oil that block cholesterol absorption in your gut. Consuming about 2 grams daily correlates with an 8% to 10% drop in LDL cholesterol. You can find them naturally in the foods listed above, or in fortified products like certain margarines, orange juice, and yogurt drinks.
The Portfolio Diet, developed by researchers at the University of Toronto, combines plant sterols with four other cholesterol-lowering food categories into a single eating strategy. Its five pillars are:
- Plant protein: beans, lentils, peas, and soy-based foods
- Nuts and seeds: almonds, walnuts, pistachios, chia seeds, flaxseeds
- Viscous (soluble) fiber: oats, barley, eggplant, okra, apples, berries
- Plant sterols: found in nuts, soy, and fortified foods
- Monounsaturated fats: extra-virgin olive oil, canola oil, avocados
You don’t have to hit every category at every meal. Incorporating even a few of these foods regularly provides cumulative benefit, and you’ll notice significant overlap with both the Mediterranean and DASH patterns.
What the Latest Science Says About Alcohol
For decades, moderate drinking, particularly red wine, was considered heart-protective. That idea is now outdated. A 2024 study in the Journal of the American Medical Association that followed more than 135,000 adults age 60 and older found that even moderate alcohol intake was associated with a higher death rate, with much of that increase coming from cancer and cardiovascular disease.
Earlier studies suggesting a benefit had significant design flaws, often comparing drinkers to non-drinkers who had quit for health reasons, making the non-drinking group appear sicker than it actually was. Stanford Medicine researchers across multiple specialties now agree: there is no safe level of alcohol that improves heart health. If you don’t drink, there’s no reason to start. If you do, reducing your intake is one of the more straightforward things you can do for your cardiovascular system.
Putting It Into Practice
A heart-healthy diet doesn’t require perfection or a complete overhaul. Small, consistent changes add up. Fill half your plate with vegetables and fruits. Choose whole grains like brown rice, oats, and whole-wheat bread over refined versions. Eat fish twice a week. Snack on nuts instead of chips. Cook with olive oil instead of butter. Read labels for sodium and added sugar content.
The foods you eat regularly matter far more than occasional indulgences. If your baseline meals are built around vegetables, whole grains, legumes, healthy fats, and lean proteins, your heart is getting what it needs. The patterns that work best are the ones you can actually sustain, which is why both the Mediterranean and DASH diets focus on whole categories of delicious food rather than rigid restrictions.