When it comes to heart health, few ingredients have earned as much praise as avocado and olive oil. Both are celebrated for their rich, plant-based fats and their ability to support cardiovascular wellness. But if you had to choose just one for your daily diet, which one comes out on top? In this face-off, we’ll break down how these two superfoods compare, not to crown a winner, but to help you decide how to use each for maximum benefit. After all, the best heart-healthy diet isn’t about picking sides—it’s about knowing when and why to reach for each.

Let’s start with avocado, the creamy green fat that has taken American kitchens by storm. Avocados are unique in the fruit world because they are packed with monounsaturated fats, specifically oleic acid, which is the same heart-friendly fat found in olive oil. One medium avocado provides about 15 grams of monounsaturated fat and is also rich in potassium, fiber, and antioxidants like lutein and vitamin E. These nutrients work together to lower LDL cholesterol (the “bad” kind) while maintaining or even boosting HDL cholesterol (the “good” kind). The fiber in avocado—roughly 10 grams per fruit—also helps regulate blood sugar and supports healthy digestion, both of which are linked to lower heart disease risk. Studies have shown that regular avocado consumption can reduce the risk of metabolic syndrome, a cluster of conditions that often precede heart problems.

Now consider olive oil, the cornerstone of the Mediterranean diet and a staple for heart health advocates. Extra virgin olive oil, in particular, is loaded with polyphenols—powerful anti-inflammatory compounds that protect blood vessels from damage. Like avocado, olive oil is high in monounsaturated fats, but it also contains a small amount of polyunsaturated fats, including omega-3s. Research consistently finds that people who replace saturated fats (like butter or lard) with olive oil have lower rates of heart attacks and strokes. A 2020 study in the Journal of the American College of Cardiology even showed that consuming more than half a tablespoon of olive oil per day was linked to a 14% lower risk of cardiovascular disease. The key is to use olive oil in its raw or lightly heated form to preserve those delicate polyphenols.

So where does the face-off get interesting? It comes down to form and function. Avocado is a whole food, meaning you get the fat along with fiber, water, and a range of micronutrients. This makes it more satiating and better for replacing less healthy fats in meals, like swapping mayo on a sandwich for mashed avocado. Olive oil, on the other hand, is a concentrated fat source, ideal for dressings, drizzling over vegetables, or cooking at low to medium heat. Neither is “better” overall—they shine in different situations. For example, if you’re looking to lower cholesterol, both work well, but the fiber in avocado might give it a slight edge for appetite control and gut health. If your goal is to reduce inflammation, olive oil’s polyphenol content is hard to beat.

One important note: not all olive oil is created equal. Many bottles labeled “olive oil” are refined or blended with cheaper oils, stripping away most of the heart-protective polyphenols. Always look for “extra virgin” and check for a harvest date to ensure freshness. Avocados, too, vary in ripeness and quality, but as a whole fruit, they are more consistent in their nutrient profile.

The real takeaway? You don’t have to choose. In fact, using both can create a synergy that boosts heart health even more. Drizzle olive oil over a salad topped with sliced avocado, or use avocado as a base for a dip that includes olive oil and herbs. The Mediterranean diet—which is often cited as the gold standard for heart health—features both prominently. So instead of pitting these two superfoods against each other, think of them as teammates. Avocado provides the creamy texture and fiber, while olive oil offers concentrated polyphenols and versatility in cooking.

For American adults looking to improve their diet, the simplest step is to replace unhealthy fats with these two options. Swap your morning buttered toast for avocado toast. Use olive oil in place of vegetable oil when sautéing. Over time, these small swaps add up to real improvements in cholesterol levels, blood pressure, and inflammation markers. And because both foods are flavorful and satisfying, you’re more likely to stick with the change.

In the avocado vs. olive oil face-off, your heart wins either way. The best choice is the one you’ll actually use consistently. So whether you’re scooping green goodness onto a grain bowl or drizzling golden oil over roasted vegetables, you’re making a smart, delicious move for your cardiovascular health.