Two Oils, Two Philosophies
Canola oil and olive oil represent two fundamentally different approaches to cooking fat. For a complete overview, see our Olive Oil Comparisons guide.One is a commodity industrial product extracted from a seed using chemical solvents, optimized for neutrality and shelf stability. The other is a fruit juice, mechanically pressed from olives with minimal processing, optimized for flavor and nutrition. The comparison is not close1.
This is not a matter of opinion or taste preference — the production methods, nutritional profiles, and health implications are documented and substantive. Understanding the differences helps you make better choices for your kitchen.
How They Are Made: The Fundamental Difference
Olive oil production:
- Olives are Harvested and crushed within 24–48 hours
- The fruit is mechanically pressed or centrifuged — no chemicals used
- Extra virgin olive oil is unrefined — it is the natural oil of the olive
- Cold pressing (below 27°C) preserves polyphenols and aromatics
- Refined olive oil uses chemical neutralization, bleaching, and deodorizing
Canola oil production:
- Canola seeds (modified rapeseed) are harvested and cleaned
- Seeds are cracked and flaked, then cooked with hexane solvent extraction
- The hexane is recovered and the oil is degummed, refined, bleached, and deodorized
- The final product is a neutral, colorless, odorless cooking fat
- Virtually all canola oil on the market is refined
The production methods reflect different intended uses: olive oil is meant to be consumed as a flavored food product with documented health properties. Canola oil is meant to be a cheap, stable, neutral cooking medium.
Fatty Acid Composition
| Property | Extra Virgin Olive Oil | Canola Oil (refined) |
|---|---|---|
| Oleic acid (MUFA) | 55–83% | 55–65% |
| Linoleic acid (omega-6) | 3.5–21% | 18–25% |
| Alpha-linolenic acid (omega-3) | <1% | 9–11% |
| Saturated fat | 13–21% | 6–8% |
| Trans fats | 0% | <0.5% (from processing) |
The most relevant difference: olive oil is lower in omega-6 polyunsaturated fat. While both oils have high oleic acid content (which is good), canola oil's higher linoleic acid content is a concern in the context of excess omega-6 consumption in Western diets. The omega-6:omega-3 ratio matters — and canola oil's 2:1 ratio is less favorable than olive oil's <1:1 ratio for anti-inflammatory eating1.
Nutritional Comparison
Extra Virgin Olive Oil:
- Contains 50–600 mg/kg polyphenols (anti-inflammatory, cardioprotective)
- Contains vitamin E (1.9mg per tablespoon)
- Contains oleocanthal (natural anti-inflammatory compound)
- Contains squalene and other specialty compounds
- Zero trans fats by nature
Canola Oil:
- No meaningful polyphenol content (stripped by refining)
- Contains vitamin E (synthetic, added during processing)
- No oleocanthal or other olive-specific compounds
- May contain trace hexane residues (<1ppm, considered safe but not zero)
- Small amounts of trans fats formed during deodorization (<0.5g/100g)
The nutritional comparison is not close. EVOO contains documented bioactive compounds that have been validated in clinical trials. Canola oil is a refined fat with a neutral fatty acid profile but no meaningful non-caloric nutritional value.
Cooking Performance
Smoke point:
- EVOO: 190–215°C (smoke point for genuine EVOO)
- Canola oil: 204°C (higher, more stable at very high heat)
Flavor:
- EVOO: Distinct olive flavor — grassy, fruity, peppery, bitter depending on origin and variety
- Canola oil: Completely neutral — no flavor contribution
Stability at heat:
- Canola oil is more stable at very high temperatures due to higher smoke point
- EVOO loses polyphenol content when heated above 160°C, but remains stable as a cooking fat
For high-heat cooking: canola oil performs better on pure smoke point. For medium-heat and below: EVOO is the better choice by nutritional quality.
Health Research Comparison
Olive oil (PREDIMED trial): Mediterranean diet supplemented with ~50ml/day of EVOO reduced major cardiovascular events by 31% in high-risk participants. This is among the strongest dietary intervention trial results in nutritional science1.
Canola oil: No equivalent large RCT exists. The health claims for canola oil are primarily based on its fatty acid profile (replacing saturated fat with MUFA) and its omega-3 content. Observational studies suggest replacing saturated fat with any PUFA or MUFA is beneficial — but the comparison between EVOO and canola oil specifically has not been tested in a large trial.
Environmental and Processing Considerations
Canola production: The majority of North American canola is genetically modified (GMO). It is grown as an annual row crop with significant pesticide and fertilizer requirements. Canola oil production involves hexane solvent extraction — a petroleum-based chemical that is removed during refining but is part of the production chain.
Olive production: Olive trees are permanent crops that sequester carbon, require minimal irrigation in rain-fed Mediterranean systems, and produce olive oil via mechanical pressing. Organic olive oil is widely available and represents a meaningful reduction in synthetic input compared to annual seed crops.
The Bottom Line
For everyday cooking and any application where the oil is not heated above 190°C:
- Extra virgin olive oil is the clear choice by nutritional quality
For high-heat cooking (deep frying at temperatures above 200°C):
- Canola oil is more heat-stable than EVOO
- Avocado oil is actually the better choice if you want heat stability with a better fatty acid profile than canola
For flavor and nutrition combined:
- EVOO wins comprehensively
The idea that canola oil is "healthier" than olive oil because it is lower in saturated fat is incomplete. The argument ignores the omega-6 content, the refining process, the lack of polyphenols, and the absence of any equivalent clinical trial data supporting canola oil's benefits. Olive oil's fatty acid profile is more favorable for long-term health, and the polyphenol content provides benefits that canola oil simply does not have.
Frequently Asked Questions
What is the difference between canola oil and olive oil?
Canola oil and olive oil are fundamentally different products. Olive oil is mechanically extracted from a fruit (the olive) and consumed primarily as an unrefined extra virgin product. Canola oil is extracted from rapeseed using chemical solvent (hexane) refining and is typically fully refined. The fatty acid composition differs: olive oil is 55–83% monounsaturated oleic acid; canola oil is approximately 60% monounsaturated but also high in polyunsaturated omega-3 and omega-6 linoleic acid, which is more susceptible to oxidative degradation at cooking temperatures. Olive oil retains the full polyphenol fraction; refined canola oil contains none.1
Is canola oil or olive oil better for cooking?
Olive oil is better for medium-heat cooking and all raw applications. The monounsaturated fat in olive oil is more oxidatively stable at cooking temperatures than the polyunsaturated fat in canola oil. Olive oil also has a higher smoke point when polyphenol content is high (374–410°F vs 400°F for canola). Canola oil has a marginally higher smoke point and remains liquid at lower temperatures, making it more convenient for deep frying. However, for sautéing, baking, and roasting, olive oil is the more appropriate choice — particularly EVOO, which retains its flavor and phenolic compounds during cooking.1
Does canola oil have health benefits?
Canola oil's health claim is primarily about replacing saturated fats with unsaturated fats, which reduces LDL cholesterol. However, canola oil's polyunsaturated fat content (omega-6 linoleic acid) is prone to oxidation and may contribute to inflammation when consumed in excess relative to omega-3 intake. The majority of canola oil is refined and contains no meaningful antioxidants or polyphenols. Olive oil's health profile is more differentiated — the polyphenols provide anti-inflammatory benefits that refined oils like canola do not have. For cardiovascular health, replacing butter or coconut oil with either oil is beneficial, but olive oil's additional polyphenol content gives it an advantage.1
Is canola oil refined?
Yes — virtually all commercial canola oil is refined using chemical solvent extraction (hexane), neutralization, bleaching, and deodorizing. The refining process removes the free fatty acids and any naturally occurring antioxidants, resulting in a neutral-tasting, stable cooking oil. "Cold-pressed" or unrefined canola oil exists but is a small fraction of the market and significantly more expensive. Refined canola oil has no polyphenols and no flavor. The choice between refined and unrefined is similar to the EVOO vs. refined olive oil distinction — the unrefined form has substantially more nutritional value.1
Referencesl. "Oil, Canola" and "Oil, Olive, Extra Virgin." https://fdc.nal.usda.gov/fdc-app.html
1. International Olive Council. "Trade Standards for Olive Oil." https://www.internationaloliveoil.org/our-products/olives/