The debate over cooking oils has moved well beyond grocery store aisles and into social media feeds, where conflicting claims about seed oils, olive oil and heart health are everywhere. Suggesting that an olive oil rich diet could raise low density lipoprotein (LDL) cholesterol the kind commonly referred to as bad cholesterol more than canola oil does. For anyone who has long considered extra virgin olive oil a non-negotiable heart health staple, that claim can feel unsettling.
The reality, according to registered dietitians, is more nuanced. Both oils are rich in unsaturated fats and both offer measurable benefits for cholesterol. But they work in different ways, and understanding those differences can help make sense of the headlines.
Canola oil is especially effective at lowering LDL cholesterol
Canola oil has a fat profile that works on multiple fronts when it comes to cholesterol. It is low in saturated fat, high in monounsaturated fat and contains alpha-linolenic acid a plant based omega 3 fatty acid. Together, these properties have been shown to lower total cholesterol, LDL cholesterol and apoB, the proteins that carry LDL and very-low-density lipoprotein (VLDL) through the bloodstream.
The polyunsaturated fats in canola oil also help the liver clear apoB containing particles more efficiently, which means fewer plaque-forming particles circulating in the blood. A meta analysis found that canola oil reduced both LDL and total cholesterol more than olive oil did, without negatively affecting any other lipid markers.
Olive oil supports HDL and offers unique antioxidant benefits
Olive oil’s cholesterol benefits are centered differently. While it is higher in monounsaturated fat and lower in polyunsaturated fat than canola oil, replacing saturated fat in the diet with the monounsaturated fat found in olive oil prompts the liver to remove more LDL from the blood reducing the amount that can build up in arterial walls.
Virgin olive oil also contains polyphenols, plant compounds that reduce oxidative stress and inflammation, both of which are linked to chronic disease. These antioxidants help lower oxidized LDL a particularly harmful particle type that contributes to plaque accumulation and may support higher levels of HDL cholesterol, often called good cholesterol.
Olive oil may slightly raise LDL particles but context matters
Some older research suggests olive oil may increase both LDL cholesterol and LDL particle numbers compared to canola oil. To understand why that distinction matters, think of it this way: LDL cholesterol is the cargo, and LDL particles are the trucks carrying it. A standard lipid panel measures the cargo, but not how many trucks are on the road.
Importantly, the type of LDL particle olive oil appears to increase tends to be large and buoyant, not the small, dense particles that more easily penetrate arterial walls and contribute to plaque buildup. The differences between the two oils on this measure are also modest, and olive oil’s antioxidant and blood-vessel benefits are widely considered to offset them.
Both oils are far better for cholesterol than saturated fats
Compared to saturated fat sources including butter, lard, beef tallow and coconut oil both canola and olive oil come out well ahead on cholesterol management. The conversation about which of the two is superior can sometimes obscure the more pressing issue: that replacing saturated fats with either unsaturated oil produces meaningful benefits for LDL and overall cardiovascular risk.
Your overall diet pattern matters more than any single oil
Nutrition experts consistently emphasize that no single ingredient determines heart health outcomes. The American Heart Association points to the full diet rich in fruits, vegetables, whole grains, lean proteins and unsaturated fats as the foundation for healthy cholesterol levels. A Mediterranean style eating pattern, in particular, has strong evidence for lowering LDL, blood sugar, inflammation and blood pressure simultaneously.
Beyond oil choices, several other factors meaningfully shape cholesterol. Regular physical activity can enhance HDL function and reduce cardiovascular risk. Managing insulin sensitivity helps lower plaque forming particle counts. Poor sleep and chronic stress have been shown to raise LDL and triglycerides and worsen inflammation. And dietary fiber particularly the soluble kind found in oats, beans, lentils, apples and ground flaxseed plays a direct role in LDL reduction, with the National Lipid Association recommending 25 to 30 grams of total fiber daily, including 5 to 10 grams of soluble fiber.
The viral debate has raised legitimate questions, but the evidence does not support the idea that olive oil is bad for cholesterol. Both oils have earned their place in a heart healthy kitchen, the bigger picture of what surrounds them on the plate is what truly drives the numbers.
