Calories in Flaxseed Oil: Full Nutrition Breakdown

Flaxseed oil, also known as linseed oil, is extracted from the seeds of the flax plant and is prized for its exceptionally high omega-3 content. A single tablespoon contains about 120 calories and provides roughly 7.3 grams of alpha-linolenic acid (ALA), making it one of the richest plant-based sources of omega-3 fatty acids. It is most commonly used as a nutritional supplement or salad dressing rather than a cooking oil.

Calories by serving size:

Of the polyunsaturated fat in flaxseed oil, approximately 53 percent is ALA (omega-3) and about 13 percent is linoleic acid (omega-6), giving it an unusually favorable omega-3 to omega-6 ratio among plant oils.

Frequently Asked Questions (FAQ)

How many calories are in a tablespoon of flaxseed oil?

One tablespoon of flaxseed oil (about 13.6 grams) provides approximately 120 calories. All of these calories come from fat, as flaxseed oil contains no protein, carbohydrates, or fiber.

How much omega-3 is in flaxseed oil?

Flaxseed oil is one of the most concentrated plant sources of omega-3 fatty acids. A single tablespoon contains approximately 7.3 grams of alpha-linolenic acid (ALA), which the body can partially convert to the longer-chain omega-3 fats EPA and DHA, although the conversion rate is relatively low.

Can you cook with flaxseed oil?

Flaxseed oil should not be used for cooking because it has a very low smoke point of about 225 degrees Fahrenheit (107 degrees Celsius) and its high polyunsaturated fat content makes it prone to oxidation when heated. It is best used cold in salad dressings, smoothies, or drizzled over finished dishes.

How should flaxseed oil be stored?

Flaxseed oil is highly perishable due to its omega-3 content and should be stored in the refrigerator in a dark, airtight bottle. Once opened, it typically has a shelf life of about six to eight weeks, and it should be discarded if it develops a bitter or off taste, which indicates rancidity.

Is flaxseed oil better than fish oil for omega-3?

Flaxseed oil provides ALA, a plant-based omega-3, while fish oil supplies EPA and DHA directly. Since the human body converts ALA to EPA and DHA at a very low rate (roughly 5 to 10 percent), fish oil is generally considered more effective for raising blood levels of these long-chain omega-3 fats. However, flaxseed oil is a valuable option for vegetarians and vegans seeking to increase their omega-3 intake.