Canola oil is one of the more heart-friendly cooking oils available, largely because of its fat composition. It has less than 7% saturated fat, the lowest of any common cooking oil, and is rich in monounsaturated and polyunsaturated fats that actively improve cholesterol levels. The American Heart Association lists canola oil among its recommended cooking oils for replacing saturated and trans fats.
What Makes Canola Oil Heart-Healthy
The fat profile of canola oil is what sets it apart. About 50 to 65% of its fat is oleic acid, the same monounsaturated fat that makes olive oil famous. Another 6 to 14% is alpha-linolenic acid, a plant-based omega-3 fat that your body can partially convert into the longer-chain omega-3s found in fish. That omega-3 content, roughly 12% on average, is unusually high for a cooking oil.
Meanwhile, canola oil keeps saturated fat below 7%, compared to around 14% in olive oil, 11% in soybean oil, and over 80% in coconut oil. Since saturated fat raises LDL cholesterol (the type linked to plaque buildup in arteries), using an oil low in saturated fat gives you a meaningful dietary advantage.
Effects on Cholesterol
A systematic review and meta-analysis of randomized controlled trials found that canola oil consumption reduced total cholesterol by about 7 mg/dL and LDL cholesterol by about 6 mg/dL. Those reductions were significant when canola oil replaced either sunflower oil or saturated fat sources. The analysis found no notable effect on HDL cholesterol or triglycerides, meaning canola oil lowers the harmful cholesterol without dragging down the protective kind.
A 6 mg/dL drop in LDL may sound modest, but cholesterol improvements from any single food swap tend to be small. The benefit compounds when canola oil is part of a broader pattern of choosing unsaturated fats over saturated ones.
Inflammation and Cardiovascular Risk Markers
Beyond cholesterol, canola oil appears to lower certain markers of inflammation that contribute to heart disease. In a controlled trial involving women with type 2 diabetes, switching to canola oil significantly reduced C-reactive protein (CRP), a key marker of systemic inflammation. CRP levels dropped from an average of about 15 mg/dL to roughly 12 mg/dL over the study period. That reduction was comparable to what olive oil achieved in the same trial, and both outperformed sunflower oil.
A separate study in patients with cardiovascular risk factors compared canola oil directly to olive oil and found each had distinct strengths. Canola oil was more effective at lowering a compound called Lp-PLA2, an enzyme linked to unstable arterial plaque. Olive oil was better at reducing IL-6, an inflammatory molecule that predicts future heart events. Both markers matter for cardiovascular risk, so the two oils complement each other rather than one being clearly superior.
How Canola Oil Compares to Olive Oil
This is the comparison most people want. Olive oil, especially extra virgin, gets more attention for heart health, and for good reason: it contains polyphenols and other antioxidants that canola oil has in lower amounts. Those compounds contribute to olive oil’s anti-inflammatory effects. But canola oil has a higher omega-3 content and lower saturated fat, which gives it its own cardiovascular advantages.
In practical terms, both oils improve cholesterol and reduce inflammation compared to saturated fat or more refined seed oils. If you cook with canola oil for everyday use and save extra virgin olive oil for dressings and lower-heat cooking, you’re covering your bases well. There’s no clinical evidence suggesting you need to avoid canola oil in favor of olive oil for heart health.
Cooking Stability at High Heat
One common concern is whether canola oil breaks down into harmful compounds when heated. All cooking oils degrade at high temperatures, producing aldehydes and other oxidation byproducts. Canola oil’s high oleic acid content actually gives it reasonable heat stability, since monounsaturated fats resist oxidation better than polyunsaturated fats like those dominant in soybean or safflower oil.
Research has tested canola oil at temperatures up to 240°C (464°F) and found it does produce some aldehydes after prolonged heating, as do virtually all vegetable oils including extra virgin olive. For typical home cooking, where oil rarely stays at extreme temperatures for hours, canola oil holds up fine. Refined canola oil has a smoke point around 200 to 230°C (400 to 450°F), making it suitable for sautéing, baking, and most frying. If you’re deep-frying repeatedly with the same oil, replacing it regularly matters more than which oil you choose.
The Erucic Acid Question
Canola oil was originally bred from rapeseed, which naturally contains erucic acid, a fatty acid that caused heart damage in animal studies at very high doses. This history fuels some of the suspicion you’ll find online. Modern canola oil is required by U.S. federal regulation to contain no more than 2% erucic acid, and most commercial canola oil falls well below that threshold. The breeding that created canola specifically targeted erucic acid removal, which is why canola got its own name rather than being sold as rapeseed oil.
At the levels present in food-grade canola oil, erucic acid poses no demonstrated risk to humans. Regulatory agencies in the U.S., Canada, and Europe have all reviewed the safety data and approved canola oil for general consumption.
Who Benefits Most
Canola oil is especially useful if you’re trying to reduce saturated fat intake without overhauling your cooking habits. Its neutral flavor works in recipes where olive oil’s taste would be unwelcome, and its cost is typically a fraction of good extra virgin olive oil. For people managing high cholesterol, replacing butter, lard, or coconut oil with canola oil is one of the simpler dietary changes that produces a measurable shift in LDL levels.
People with type 2 diabetes or metabolic syndrome may see additional benefits from the reduction in inflammatory markers, though canola oil alone isn’t a treatment for those conditions. It’s one piece of a dietary pattern, not a magic ingredient. The strongest evidence supports canola oil as a reliable, affordable substitute for higher-saturated-fat options, with real, if modest, cardiovascular benefits that add up over time.