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Grapeseed Oil: Is It Healthy or Not?


Grapeseed oil - Dr. Axe

If you’re not sure which oils to buy these days, and which to skip, you’re definitely not alone. The world of cooking oils can be really confusing — with all the talk about different methods for “pressing” the oils, ideal cooking temperatures, various smoke points and so on.

Grapeseed oil is one cooking oil that’s a bit controversial. On one hand, it’s similar to benefit-rich olive oil in that it contains some monounsaturated fat. Why might grapeseed oil be bad for you, according to some opinions? Mostly because it’s made of polyunsaturated fats (PUFAs), particularly the types called omega-6s and omega-9s.

In the right doses, these fats can be anti-inflammatory and health-promoting for hormone production, your brain, heart and more. However grapeseed oil’s high levels of PUFAs and omega-6s may be bad news — since most people already get way too much of these fatty acids in their diets.

What Is Grapeseed Oil?

Grapeseed oil is a cooking oil that’s made by pressing the seeds of grapes. What you might not know is that it’s usually a leftover byproduct of winemaking.

After wine is made, by pressing the juice from grapes and leaving the seeds behind, oils are extracted from the crushed seeds. It might seem odd that oil is held within the seed of a fruit, but in fact, a small amount of some type of fat is found inside just about every seed, even seeds of fruits and vegetables.

Because it’s created as a by-product of winemaking, grapeseed oil is available in high yields and is usually expensive.

What is grapeseed oil used for? Not only can you cook with it, but you can also apply it to your skin and hair, due to its moisturizing effects.

Nutrition Facts

According to the USDA, one tablespoon of grapeseed oil has about:

  • 14 grams fat (about 10 percent of which is saturated fat, 16 percent monounsaturated and 70 percent polyunsaturated)
  • 120 calories
  • 9 milligrams vitamin E (19 percent DV)

Grapes themselves are packed with nutrients, especially certain types of antioxidants — which is why studies show that wine (especially red wine) that supplies resveratrol can be beneficial in small to moderate amounts.

But how about oil made from the seeds of grapes? It’s not exactly the same thing, as it isn’t beaming with the same vitamins, resveratrol, dietary fiber or “proanthocyanidins.”

There are some grapeseed oil benefits, thanks to its vitamin E content for example, but at the end of the day, it lacks vitamin K, vitamin C, copper and potassium compared to eating actual grapes.

Grapeseed oil nutrition - Dr. Axe

Grapeseed Oil vs. Olive Oil

Is grapeseed oil better than olive oil? What about avocado oil?

Just like other vegetable oils (such as corn, safflower, soybean or sunflower or canola oil), grapeseed oil contains PUFAs, in addition to small amounts of vitamins like vitamin E.

PUFA consumption has been tied to lower cholesterol levels, improved heart health and certain other benefits, but striking a balance with PUFA intake in proportion to other fats — like omega-3s, monounsaturated fats and saturated fats— is important.

If we compare the amount of omega-6s in grapeseed oil to other cooking oils, we find that grapeseed has one of the highest levels. Here are how different oils stack up:

  • Grapeseed oil: 70 percent omega-6 PUFA
  • Sunflower oil: 68 percent
  • Corn oil: 54 percent
  • Soybean oil: 51 percent
  • Canola oil: 19 percent

Some experts will tell you that if you consider the available nutrients, you’re better off probably eating grapes and using another cooking oil like olive or coconut oil. That being said, using grapeseed oil for high heat cooking has benefits over using oils with lower smoking points.


1. Very High in PUFA Omega-6s, Especially Linoleic Acids

As the University of Maryland Medical Center points out, “there are several different types of omega-6 fatty acids, and not all promote inflammation.”

Studies show the highest percentage of fatty acid in grapeseed oil, linoleic acid, is a type of essential fat — meaning we can’t make it on our own and must obtain it from food. LA is converted to gamma-linolenic acid (GLA) once we digest it, and GLA can have protective roles in the body.

There’s evidence that GLA might be able to lower cholesterol levels and inflammation in some cases, especially when it’s converted to yet another molecule called DGLA.

One study published in the International Journal of Food Science and Nutrition even found that compared to other vegetable oils like sunflower oil, the consumption of grapeseed oil was much more beneficial for lowering inflammation and insulin resistance in overweight or obese females.

2. Good Source of Vitamin E

Grapeseed oil contains a good amount of vitamin E, which is an important antioxidant that most people could use more of. Compared to olive oil, it offers about double the vitamin E!

This is huge, because studies show that vitamin E benefits immunity, eye health, skin health, as well as many other important bodily functions.

3. Zero Trans Fat and Non-hydrogenated

There might still be some debate as to which ratios of different fatty acids are best, but there is no debate about the dangers of trans fats and hydrogenated fats, which is why they should be avoided.

Trans fats are commonly found in fast food, packaged snacks and fried foods. The evidence is so clear that they’re bad for our health that they’re even being banned in some cases now, and many large food manufacturers are committing to moving away from using them for good.

4. Relatively High Smoke Point

The smoke point of an oil or cooking fat refers to its burning point, or the temperature at which the fat begins to oxidize, changing its chemical structure in a negative way. Beneficial nutrients found in unrefined oils are destroyed when the oil is overheated, plus the taste can become unappealing

PUFAs are not usually the best choice for cooking because they’re known to oxidize easily, which causes them to become “toxic.” However, grapeseed oil has a moderately higher smoke point than olive oil or certain other PUFA oils.

With a smoke point of 421°F, it’s appropriate for high heat cooking such as sauteing or baking, but deep frying is still recommended. For comparison sake, avocado oil has a smoke point of about 520°F, butter and coconut oil have smoke points of 350°F, and olive oil has one of about 410°F.

5. Beneficial for Hair and Skin

Aside from being a moderately healthy cooking oil, grapeseed oil has many uses for skincare and is especially beneficial for people with dry skin types or sun damage. It can be used to moisturize dry skin and hair naturally.

Since it’s free from synthetic ingredients, a good source of vitamin E and loaded with moisturizing fatty acids, there seems to be nothing wrong with using unrefined grapeseed oil topically.

If you’re prone to oily skin, you may find that grapeseed oil is a lightweight moisturizer that doesn’t contribute to clogged pores. It also makes a good natural massage oil and carrier oil (to be mixed with essential oils), including for sensitive skin.

The good, bad & ugly of grapeseed oil - Dr. Axe

Risks and Side Effects

The fatty acid composition of grape seed oil is where things get controversial. The balance or ratio between different fats is what’s really important. An abundance of omega-6s in the diet compared to other fats (omega-3s, especially) is problematic because this can increase inflammation levels, according to studies.

Omega-6s aren’t bad by nature; people just seem to get too much of them for their own good.

Different authorities recommend different ratios of omega-3s to omega-6s (such as 1:1 or up to 10:1), but most accept that higher omega-3 intake is correlated with better health.

For example, in the Mediterranean diet, the level of omega-6 fatty acids is much lower than in the standard American diet. The Mediterranean diet has been tied to better heart health, weight management and cognitive functioning into older age. People living in the Mediterranean usually eat a diet very low in factory farm-raised animal products, refined oils and packaged snacks loaded with omega-6s, which is one more reason why the American diet doesn’t look so good.

Here are some downsides to consuming a diet too high in omega-6s:

  • Increased inflammation: Excessive PUFA consumption and low omega-3 intake can lead to heightened inflammation, which increases the risks for many chronic diseases. Inflammation takes place when free radicals alter the way DNA works, attack cell membranes and change the way the immune system works. The more inflammation you experience, the earlier you show signs of aging and the more likely you are to deal with disease.
  • Higher cholesterol: When we obtain free radicals from toxic foods, which can happen in the case of PUFAs that become oxidized and molecularly damaged, our body isn’t able to metabolize and use cholesterol as well. This can up the risk for clogged arteries, heart disease and so on.
  • Hormonal imbalance and thyroid disorders: Inflammation damages our ability to produce and balance important hormones. Very high levels of omega-6s might be able to interfere with your ability to produce sex hormones and mood-stabilizing hormones and can interfere with thyroid activity.
  • Obesity and weight gain: When inflammation levels rise and your hormones become altered, this may mean impaired thyroid function, a sluggish metabolism and other issues controlling your weight.

Best Kind to Buy

Oils can be made in various ways — for example, some are “cold-pressed” or “expeller-pressed” (like those labeled as extra virgin), while others require chemical solvents and a very lengthy process to draw the oils out.

In order to extract the oil from the tiny grape seeds, heavy machinery and sometimes chemicals need to be used. Some modern industrial machines used to make grapeseed oil heat the oil to very high temperatures, which is the opposite of what we want, since this can destroy the oil.

So for this reason, the potential benefits of different grapeseed oils depends a lot on how the oil is processed and bottled.

Ideally look for cold-pressed, pure, organic grapeseed oil.

Cold-pressing, or expeller-pressing, means that the oil wasn’t heated to very high temperatures during the manufacturing process, which keeps the molecular composition of the fatty acids from negatively changing. Cold-pressing is basically using powerful machines to squeeze the oil out, without exposing it to chemical solvents or other ingredients that can make their way into the oil and be damaging to your health.

To cut costs and speed up efficiency, most manufacturers turn to solvents such as hexane, along with high-heat machines, during the processing period. So you might have to pay a bit more for a high-quality, pure grapeseed oil, but it’s worth it. To prevent the oil from going rancid, make sure it’s not exposed to light and high heats while being stored.

Note: Grape seed extract is a bit different than grapeseed oil. Grape seed extract is also sourced the seeds of grapes. It’s taken as a dietary supplement in capsule form, most often to help manage conditions caused by inflammation and those that affect the cardiovascular system, according to the National Institutes of Health. It contains a number of antioxidants, including phenolic acids, anthocyanins, flavonoids and oligomeric proanthocyanidin complexes (OPCs).


Grapeseed oil can be a good substitute for olive oil such as when stir-frying and sauteing. It’s also definitely a step up from processed oils like sunflower, corn and safflower oils.

In terms of its taste, it’s virtually flavorless and odorless, which some people like because it doesn’t alter the taste of recipes like other oils sometimes can.

When it comes to cooking, pure grapeseed oil is relatively stable and can be heated without going rancid easily. However, in terms of providing taste, such as when making salad dressings or dips, other flavorful oils like virgin olive oil are a better choice.

That being said, it doesn’t overpower the flavor of other ingredients, so as Bon Appetit magazine suggests, you may want to use it in order to let high-quality balsamic vinegars or other flavors stand out.What types of cooking methods are a good use of grapeseed oil?

  • vegetable stir-fries
  • sauteing in a pan
  • oven-roasting
  • baking

Still, it’s a good idea to use it sparingly, such as by also using avocado oil or grass-fed butter/ghee when cooking. These generally make good grapeseed oil substitutes. This ensures your diet includes a variety of different fats, each with their own unique benefits.

Final Thoughts

  • Grapeseed oil is a cooking oil that’s made by pressing the seeds of grapes. It’s high in vitamin E and very high in polyunsaturated fats (PUFAS).
  • Potential benefits of grapeseed oil include moisturizing skin and hair, and helping to lower high cholesterol.
  • Is grapeseed oil a healthy cooking oil? Most people can afford to eat less omega-6 foods and more omega-3s, so considering grapeseed oil contributes high amounts of omega-6s, it’s not the best oil to have in high amounts.
  • It shouldn’t be the primary source of fat in your diet, and you should aim to balance it out with other types of healthy fats.
Josh Axe

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