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Is Mayonnaise Bad for Your Health? Not Necessarily

Cara Rosenbloom, RDKatie E. Golden, MD
Written by Cara Rosenbloom, RD | Reviewed by Katie E. Golden, MD
Published on May 7, 2025

Key takeaways:

  • Mayonnaise is made from oil, eggs, and vinegar. Most mayonnaise is made with soybean oil. But you can also buy mayonnaise made with olive oil or avocado oil. 

  • Mayonnaise contains some healthful unsaturated fats that can benefit your health. But mayonnaise is high in both calories and fat, so it’s best to use it sparingly.  

  • Some people think mayo can cause salmonella, since it’s made with raw eggs. But store-bought mayonnaise is made with pasteurized eggs. The pasteurization process destroys salmonella bacteria. 

A man spreads mayonnaise on a piece of bread.
Vadym Petrochenko/iStock via Getty Images Plus

Mayonnaise is the number one best-selling condiment in the U.S. It’s creamy, tangy, and versatile. People enjoy it on sandwiches, in dressings, and dips. Some people add it to recipes like mashed potatoes or scrambled eggs. You can even use it to make the moistest chocolate cake you’ll ever try.   

But you might be wondering: Is mayonnaise bad for you? And since mayonnaise’s ingredients include raw eggs, is it always safe to eat? If mayonnaise is a bit of a mystery for you, you’re not alone. Let’s take a look at all things mayonnaise to learn the facts. 

What is mayonnaise?

Mayonnaise is made of soybean oil, vinegar, and egg yolks. It may also contain salt, sugar, and spices such as mustard powder or paprika. Some types of mayonnaise use olive oil or avocado oil instead of or in addition to the soybean oil. 

The ingredients in mayonnaise are mixed to create an emulsion. This is when ingredients blend together and don’t separate. But if you’ve ever mixed oil and vinegar, you know that they don’t combine well. In mayonnaise, egg yolks are the ingredient that bring it all together. 

You can also buy egg-free mayonnaise. Instead of using egg yolks as emulsifiers, egg-free mayonnaise usually uses some combination of:

  • Mustard

  • Food starch made from potato, corn, or wheat 

  • Xanthan gum

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Mayonnaise nutrition facts

Below is the nutrition information for different popular brands of mayonnaise (per 1 tbsp).  

Calories (kcal)

Fat (g)

Protein (g)

Carbs (g)

Sodium (mg)

*Hellmann’s Regular Mayonnaise

90

10

0

0

90

Duke’s Real Mayonnaise

100

12

0

0

70

Hellmann’s Light Mayonnaise

35

3.5

0

1

110

Chosen Foods Avocado Oil Mayonnaise

90

10

0

0

45

Spectrum Olive Oil Mayonnaise

100

11

0

0

90

Hellmann’s Avocado Oil Mayonnaise

60

7

0

1

110

Hellmann’s Olive Oil Mayonnaise

60

6

0

1

125

Hellmann’s Vegan Mayonnaise

70

8

1

1

100

* Hellmann’s is called Best Foods in some parts of the U.S. 

Is mayonnaise bad for you?

Mayonnaise can be part of a balanced and nutritious diet. The oils in mayonnaise — such as soybean, olive, and avocado oils — contain monounsaturated and polyunsaturated fats. These are considered healthy fats. The American Heart Association (AHA) says that lowering intake of dietary saturated fat (like butter) and replacing it with polyunsaturated oils helps reduce the risk of cardiovascular disease. 

But keep in mind that regular mayonnaise contains high amounts of both calories and fat, so keep an eye on how much of it you use. A standard serving size is 1 tbsp.

What about salmonella?

Some people have concerns about the raw egg yolks in mayonnaise. This is because eggs can contain salmonella, a foodborne pathogen that can cause stomach cramps, diarrhea, and fever if ingested. But mayonnaise uses pasteurized eggs. Pasteurization is a heat treatment process that kills harmful bacteria like salmonella. So mayonnaise that you buy from the store is safe to eat. If you make mayonnaise from scratch at home, use pasteurized eggs to be safe. 

How to choose healthier mayonnaise

The best mayonnaise to choose may be regular mayonnaise made from pasteurized eggs, oil, and vinegar. This is the least processed version, since it’s just a combination of whole-food ingredients. 

Some mayonnaises are marketed as being more “health-conscious.” But it’s important to note that these mayonnaises aren’t necessarily better for you. Some lower-calorie options (like light mayo, or those made with olive oil or avocado oil) use water instead of oil as the first ingredient. This reduces calories and fat. But these options usually contain more processed ingredients. When manufacturers reduce fat and oil, they often replace them with sugar, salt, gums, and thickeners, such as food starch. 

Is Miracle Whip healthier than mayonnaise? 

Not necessarily. Miracle Whip looks like mayonnaise and is packaged similarly, but it isn’t the same thing. Miracle Whip has the same base ingredients as mayo (eggs, oil, and vinegar). But it uses less oil. It also contains modified cornstarch as a thickener, added sugar in the form of high fructose corn syrup (HFCS), and spices. As a result, it tastes sweeter and tangier than mayonnaise. 

So, while Miracle Whip has less fat and calories than mayonnaise, it’s considered less healthful because of its additives. For example, HFCS is linked to high cholesterol and obesity.

Note that the FDA considers Miracle Whip to be a dressing, not a mayonnaise.  

Alternatives to mayonnaise

If you aren’t a fan of mayonnaise, try swapping it out for one of these alternatives:

  • Tzatziki (yogurt spread)

  • Hummus (chickpea spread)

  • Yellow or dijon mustard

  • Greek yogurt

  • Pesto

  • Guacamole

  • Tahini (sesame seed paste)

  • Cashew butter

Frequently asked questions

Can mayonnaise go bad?

Yes, mayonnaise can go bad. After opening a jar of mayonnaise, you can refrigerate it for up to 2 months. If you’re preparing sandwiches, potato salad, or other mayo-based recipes, pay attention to how long the food is left out. Dispose of anything left out longer than 2 hours at room temperature. If your mayo-based food is outdoors or in a particularly warm environment, discard it after 1 hour. (This is the rule for all perishable food, not just foods with mayo.)

Is mayonnaise dairy free?

Mayonnaise is dairy free if it’s made using the traditional recipe of oil, vinegar, and egg yolks. Some people mistakenly think that eggs and dairy are the same thing. But a food is only considered dairy if it comes from cows. Mayonnaise doesn’t usually contain dairy ingredients, such as milk or cream. 

Is mayonnaise gluten free?

Mayonnaise is gluten free when made using the traditional recipe of oil, egg yolks, and vinegar. A light or vegan mayo can contain food starch, which may contain wheat. Read ingredients lists to know for sure.

The bottom line

Whether it’s mixed into a potato salad, spread on a ham and cheese sandwich, or used in a dip, mayonnaise can be part of a balanced diet. While it’s high in both fat and calories, its fat is unsaturated, which has some benefits for your health. Just try to eat mayonnaise in moderation. And choose types with simple, whole-food ingredients (oil, egg, and vinegar) to avoid unnecessary additives.

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Why trust our experts?

Cara Rosenbloom, RD
Cara Rosenbloom, RD, has been a registered dietitian for 22 years. She began her career working as a dietitian at Toronto's Hospital for Sick Children (SickKids).
Meredith Hoffa
Edited by:
Meredith Hoffa
Meredith Hoffa is a senior health editor at GoodRx, where she leads journalists and clinicians covering various well-being topics, particularly in diet and nutrition.
Katie E. Golden, MD
Katie E. Golden, MD, is a board-certified emergency medicine physician and a medical editor at GoodRx.

References

Chetana, R., et al. (2019). Studies on eggless mayonnaise from rice bran and sesame oils. Journal of Food Science and Technology.

FoodSafety.gov. (n.d.). Salmonella and eggs.

View All References (11)

Moeller, S. M., et al. (2009). The effects of high fructose syrup. Journal of the American College of Nutrition.

MyFoodData. (n.d.). Best Foods - Olive oil mayonnaise dressing

MyFoodData. (n.d.). Chosen Foods - Mayo avocado oil

MyFoodData. (n.d.). Dukes Real mayonnaise

MyFoodData. (n.d.). Hellmann’s - Avocado oil mayonnaise dressing, avocado oil

MyFoodData. (n.d.). Hellmann’s - Light mayonnaise

MyFoodData. (n.d.). Hellmann’s - Real mayonnaise

MyFoodData. (n.d.). Miracle Whip - Dressing

MyFoodData. (n.d.). Spectrum Culinary - Organic with extra virgin olive oil mayonnaise

MyFoodData. (n.d.). Vegan mayo

Sacks, F. M., et al. (2017). Dietary fats and cardiovascular disease: A presidential advisory from the American Heart Association. Circulation.

GoodRx Health has strict sourcing policies and relies on primary sources such as medical organizations, governmental agencies, academic institutions, and peer-reviewed scientific journals. Learn more about how we ensure our content is accurate, thorough, and unbiased by reading our editorial guidelines.

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