This Common Kitchen Oil Could Be Your Heart’s Best Friend

Health Points

• Extra virgin olive oil stands as the top choice for heart health according to nutrition experts, backed by extensive Mediterranean diet research
• The oil’s high monounsaturated fat content and antioxidant compounds help reduce inflammation and support cardiovascular function
• Simple substitutions like using olive oil instead of butter can provide meaningful heart-protective benefits in everyday cooking

When it comes to protecting your heart through the foods you eat, the type of oil you cook with matters more than many people realize. Nutrition experts have reached a clear consensus: extra virgin olive oil deserves the top spot for cardiovascular health.

The science supporting olive oil’s heart benefits is remarkably strong. Decades of research on the Mediterranean diet — where olive oil serves as a primary fat source — have consistently shown reduced rates of heart disease among populations following this eating pattern.

“Extra virgin olive oil is rich in monounsaturated fatty acids, particularly oleic acid, which has been shown to improve cholesterol levels,” explains registered dietitian Michelle Routhenstein, a preventive cardiology nutritionist. “It also contains powerful antioxidants called polyphenols that reduce inflammation and oxidative stress in the cardiovascular system.”

These polyphenols are what set extra virgin olive oil apart from more refined cooking oils. The compounds help protect the delicate lining of blood vessels and may reduce the formation of arterial plaque that can lead to heart attacks and strokes.

The oil’s monounsaturated fats work differently in the body compared to the saturated fats found in butter, lard, and coconut oil. Rather than raising LDL (the harmful cholesterol), monounsaturated fats can actually help lower it while maintaining or even raising HDL, the protective form of cholesterol.

A landmark 2022 study published in the Journal of the American College of Cardiology found that people who consumed more than half a tablespoon of olive oil daily had a 14% lower risk of cardiovascular disease compared to those who rarely or never consumed it. The benefits held true even when researchers accounted for overall diet quality and other lifestyle factors.

For Americans over 40 looking to incorporate more olive oil into their diets, the transition doesn’t require a complete kitchen overhaul. Start by replacing butter or margarine with olive oil in cooking applications where the flavor works well — sautéing vegetables, preparing marinades, or drizzling over finished dishes.

“You don’t need to use expensive imported oils for cooking,” notes registered dietitian Karen Collins, nutrition advisor to the American Institute for Cancer Research. “Save the pricier extra virgin varieties for finishing dishes where you’ll taste the flavor difference, and use more affordable versions for everyday cooking.”

When shopping, look for bottles labeled “extra virgin” rather than simply “olive oil” or “light olive oil.” The extra virgin designation means the oil comes from the first pressing of olives and retains the highest levels of beneficial compounds. Dark glass bottles or tins help protect the oil from light exposure that can degrade its quality.

Storage matters too. Keep olive oil in a cool, dark place rather than next to the stove. Heat and light exposure can cause the oil to oxidize and lose some of its heart-protective properties over time.

While olive oil leads the pack for heart health, other plant-based oils like avocado oil and canola oil also offer cardiovascular benefits. The key distinction is choosing oils high in unsaturated fats while limiting those high in saturated fats.

One common concern about cooking with olive oil is its smoke point — the temperature at which an oil begins to break down and smoke. Extra virgin olive oil has a lower smoke point than some refined oils, typically around 375-405°F. This makes it perfectly suitable for most home cooking methods, including sautéing and roasting at moderate temperatures, though it may not be ideal for very high-heat applications like deep frying.

The bottom line for heart health is clear: replacing less healthy fats with extra virgin olive oil represents one of the simplest, most evidence-based dietary changes you can make. Combined with other heart-healthy habits like regular physical activity, stress management, and eating plenty of fruits and vegetables, this kitchen staple can play a meaningful role in supporting cardiovascular wellness as you age.