Rapeseed oil is now found in countless kitchens, processed foods, and restaurant meals around the world. People often use it every day, sometimes without realising what it is, where it comes from, or the effects it might have on the body. In this article, I want to break down the facts about rapeseed oil, why I personally won’t touch it, describe the impacts I’ve felt, and offer straightforward tips on better alternatives.
Different Types of Rapeseed Oil
There’s more than one type of rapeseed oil, and knowing what you’re really using can make a difference. The most typical kind on store shelves is standard refined rapeseed oil. In the U.S., this is usually labelled as canola oil or vegetable oil, while in Europe, you’ll often see it marked as rapeseed oil. There’s also cold pressed or extra virgin rapeseed oil made by pressing without using high heat or strong chemical solvents, as well as organic options. However, most rapeseed oil in processed foods or fast food kitchens is still the regular, refined kind.
This regular oil is made from the seeds of the Brassica napus plant. Canola is simply a type of rapeseed oil, bred to have lower erucic acid for human safety. Even with less erucic acid, nearly all supermarket and restaurant rapeseed oil is highly refined to give it a longer shelf life, neutral flavour, and mild colour. Unfortunately for us all, the refining process removes many natural compounds, including vitamins and antioxidants.
How Rapeseed Oil Is Processed
The process to create rapeseed oil is industrial and complex. First, seeds get cleaned and heated. They’re then crushed and pressed to extract some of their oil, but that’s not enough for large-scale production. So, manufacturers use chemical solvents like hexane to pull out more oil from the crushed seeds. Once extraction is complete, the oil goes through more stages: refining to strip out impurities, bleaching to change the colour, and deodorising to yank out unwanted smells. These processes sweep away most natural flavour and nutrients, leaving a shelf stable product for everything from dressings to crackers.
All the heat, chemicals, and industrial steps can change the oil’s chemistry. This can create trans fats, alongside other byproducts that aren’t typically found in oils like olive or coconut. Some brands offer cold pressed rapeseed oil as a better choice, but even those keep a fatty acid balance that could be rough on people like me who care about gut health and want to cut down inflammation.
Effects of Rapeseed Oil on the Body
What exactly does rapeseed oil do in your system? The biggest issue for me is how it runs up the Omega-6 fats in my diet—mostly linoleic acid—and hardly delivers any Omega-3’s. Most diets today already pile on too much Omega-6 compared to Omega-3, so more rapeseed oil can easily switch the body into an inflamed state.
The body needs a balance between Omega-6 and Omega-3. When you eat a lot more Omega-6 (something that happens fast if you use lots of rapeseed oil), it sets the stage for extra inflammation. This can show up in your joints, skin, or even your mood and mental health.
Damage to the Gut Microbiome
Caring for my gut health tops my list. Research has shown diets loaded with Omega-6 oils like rapeseed oil can hurt your gut bacteria—the helpful ones that keep digestion, regularity, and even your immune system in shape. When I gave up using processed seed oils, I noticed a calmer gut and fewer digestion troubles. It’s a huge difference I can feel every day.
Inflammation buildup in the Body
Eating a lot of rapeseed oil means filling your meals with Omega-6 fats. These are signals to your immune system, often spiking the body’s inflammation markers. Keeping up this habit is tied to more inflammation-based conditions, like arthritis flare-ups, trouble with blood sugar, and breakout-prone skin. For me, skipping these oils has meant fewer aches and more energy.
Links to Various Illnesses
Scientists have linked high Omega-6 diets with a jump in risks for heart disease, diabetes, weight gain, and even certain cancers. While many health authorities say refined rapeseed oil is fine in moderation, I personally found more lasting energy and improved health once I cut it out. For me, avoiding the possible long-term risks is an easy choice when there are plenty of better oils available.
Common Foods and Sauces with Rapeseed Oil
You might be eating more rapeseed oil than you think. It’s common in mayonnaise, commercial sour cream, ranch dressing, French dressing, potato salad, and sandwich spreads; often it’s the main ingredient. Croutons, crackers, store bought pesto, pre-made hummus, and even cake and pancake mixes may include it. Watch for it in supermarket coleslaw, burger buns, soft tortillas, margarine, and vegan or low-fat products. Sometimes, the label just says “vegetable oil,” but rapeseed is usually the key oil used—this is especially true in Europe and North America.
When I started checking labels, I noticed how often rapeseed oil popped up in soups, instant noodles, store bought dips, frozen meals, and prepared sides like French fries or potato wedges. Restaurants and fast food chains also often use rapeseed oil for deep frying, thanks to its cost and long shelf life. Removing or reducing it in your own meals and snacks can lower your Omega-6 load by a lot.
Better Alternatives to Rapeseed Oil
Swapping rapeseed oil for other cooking fats made a real difference in how I feel. Here’s what I reach for now to keep meals delicious and gut-friendly:
- Olive Oil: Extra virgin olive oil is a favourite for salad dressings, dipping breads, drizzling on veggies, and gentle sauteing. It delivers monounsaturated fat and a pile of antioxidants.
- Butter: When I want richer taste in baking or sauteing, I use real butter—preferably from grass fed cows if I can find it. It’s a source of natural vitamins and minerals.
- Ghee: For high-heat cooking, ghee is easier to digest and less likely to burn or smoke. Its nutty flavour brings something new to roasted or pan-seared dishes.
- Coconut Oil: This is a go-to for baking and Asian-inspired recipes. It stays stable at higher heat and has a lightly sweet taste that works in both savoury and sweet dishes.
If you want even more options, good quality avocado oil, duck fat, or lard can work for specific recipes, bringing their own flavours and cooking benefits. I stick with unrefined and cold pressed oils when possible because they keep more of their original nutrients and don’t pile on pro-inflammatory fat types.
Frequently Asked Questions About Rapeseed Oil
Many friends and family have asked me about this topic, so here are honest answers to the questions I get most often.
Question: Does rapeseed oil contain trans fats?
Answer: Some refined rapeseed oil may have traces of trans fats, especially if processed at high temperatures. Cold pressed oil skips some of these, but can still push up Omega-6 levels if you use too much.
Question: Is canola oil the same as rapeseed oil?
Answer: Canola oil is a type of rapeseed oil bred to have low erucic acid. Although it gets promoted as a healthier option, it still packs in Omega-6 fats and is produced with the same heavy processing, so my concerns remain the same.
Question: Why is rapeseed oil used so much in packaged foods?
Answer: It’s inexpensive and stable at room temperature. The mild taste means it doesn’t clash with other ingredients, marking it as a favourite in large-scale food manufacturing.
Question: Are there health benefits to any kind of rapeseed oil?
Answer: Some studies show that cold pressed rapeseed oil provides vitamin E and plant sterols, which have mild perks. But given the inflammation risk and better options available, I don’t find these modest upsides worth it, especially if gut health is your goal.
Choosing What’s Best for You
At the end of the day, skipping rapeseed oil and focusing on natural, minimally processed fats has noticeably improved my digestion, energy, and how much I enjoy food. Reading ingredient lists, making meals at home, and picking quality oils is the easiest way for me to support daily health. If you’re wrestling with gut issues, inflammation, or want cleaner, more honest ingredients in your food, making the switch away from rapeseed oil is a smart place to start.