A Side-by-Side Comparison of a Serving of Fat

Elle Penner, MPH, RD
by Elle Penner, MPH, RD
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A Side-by-Side Comparison of a Serving of Fat

Dietary fat is an important part of your diet and is essential for supporting cell growth and protecting your body organs. It’s also key in helping you absorb fat-soluble nutrients like vitamins A, D, E and K. The Institute of Medicine (IOM) suggests that fats comprise 20-35% of total calories in your diet.

Fat is found in a variety of foods, either as naturally occurring or as added fat during processing and cooking. Naturally occurring fats tend to be found in dairy, meat and fish, nuts and seeds, oil and fatty fruits. Keep in mind that not all fats are created equal when it comes to health. Here’s a side-by-side comparison of 5 different kinds of fat:

Among plant oils, olive oil is the highest in heart-healthy monounsaturated fats. Though high in saturated fat, it’s high lauric acid content makes virgin coconut oil a great substitute for other types of saturated fats, such as lard and butter, and trans fats like vegetable shortening.

Fun Fact: Lauric acid is a medium-chain fatty acid which is processed by the liver and is quickly converted into energy by cells. Some studies suggest these particular fatty acids may be beneficial for weight loss –– in moderation, of course.

Serving for serving, creamy dressings can have double the calories of their lighter, vinegar-based counterparts due to higher fat content, but lower-calorie options can be much higher in sugar. A basic store-bought balsamic vinaigrette or Italian dressing can pack more than a teaspoon, or 4 grams, of sugar per serving.

Salad dressings can also be sneaky sources of sodium. If you’re keeping close tabs on saturated fat or added sugar, a simple homemade vinaigrette is your best bet because you can control the ingredients.

Most cheeses contain comparable calories per 1-ounce serving but can differ greatly in other nutrients like sodium, calcium and protein. While higher in protein and calcium than other cheeses, parmesan is also packed with sodium, providing nearly 20 percent the daily recommended amount in a meager 1-ounce serving.

Fun Fact: Parmesan cheese packs 10 grams of quality protein in a 1-ounce serving compared to cheddar which has 7 grams.

Not-So-Fun Fact: The same 1-ounce piece of parmesan also contains nearly 450mg sodium.

As you can see by the sheer difference in number between pistachios and almonds, serving sizes can be tough to estimate, not to mention small. For this reason, it’s best to use a food scale when portioning out a serving of nuts. While they have comparable calories, fat and protein (6g) per 1-ounce serving, each nut has something different to offer. Eat a variety of nuts to get the most nutritional bang for your buck.  

One serving of:

  • Pistachios provides 25% of the daily recommendation for vitamin B6 which is important for making disease-fighting antibodies.
  • Almonds offer nearly 20% of the daily recommendation for magnesium which is important for protein synthesis and muscle and nerve function.

You may not think of avocado as a sandwich spread but it can be used in lieu of mayonnaise by simply spreading it on a piece of bread or mixing it into tuna, chicken and egg salad. Tablespoon for tablespoon, mashed avocado contains nearly 1/4  of the calories of mayonnaise and a greater percentage of unsaturated fats. Mayonnaise certainly has its place in the fridge, but consider using mashed avocado as a nutritious substitute, especially when making sandwiches.

About the Author

Elle Penner, MPH, RD
Elle Penner, MPH, RD

Elle is a nutrition and wellness writer, recipe developer, blogger and nutrition consultant whose favorite things include her camera, carbs and quality time with her toddler. For more from this busy mama, check out Elle’s lifestyle blog or connect with her on Instagram, Pinterest and Facebook.


7 responses to “A Side-by-Side Comparison of a Serving of Fat”

  1. I’m sad to see that the only truly healthy fats included in this post are nuts and avocado. Cooking oils are extracted from their natural context and provide little in the way of nutrients when compared to whole foods. Cheese contains high levels of unhealthy fats and can cause health problems ranging from digestive distress to cancer in the vast majority of the population. And I can’t think of a single reason why mayo would ever appear on a healthy menu.

  2. Avatar christinayoung1 says:

    The problem with mayo (at least 99% of store-bought mayos) is that it is full of dangerous and inflammatory omega 6 polyunsaturated lineoleic acid. Although an essential fatty acid, the body only needs a tiny amount, and it was not meant to process the huge, concentrated amounts that are in the industrial seed oils that go into these mayos. Oxidation of these oils, either by cooking or in the cells of the human body, produce all sorts of carcinogens, everything from 4-HNE to aldahydes. The parabolic rise in the consumption of these unnatural oils has been linked to the explosion of cancer in the past 50 years. In addition, they are also linked to metabolic syndrome. It is best to either make your own mayo out of a healthy monounsaturated oil like olive or avocado, or buy one that is made from the same (you can find them on Amazon, for example).

  3. Avatar christinayoung1 says:

    Although I like coconut oil for the MCTs, don’t forget that animal fats have far more nutrients like vitamins A, D3, E, K2, CoQ10, Choline, etc. Grass-fed beef tallow is probably the healthiest because it is high in omega 3 fatty acids like DHA and EPA too. These are necessary for brain health and also to counter the inflammatory effects of omega 6 PUFAs. It is very hard to get enough DHA and EPA from the artificial and processed foods we have today.

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