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What Is Arachidonic Acid?

Arachidonic acid, AA, 20:4 n-6, also known as arachidonate. It’s a polyunsaturated omega-6 fatty acid. It’s needed for maintaining normal health.

When arachidonic acid has been processed, most AA is not longer present as a free acid.

Arachidonic Acid Is Essential

Arachidonic acid is a polyunsaturated, essential fatty acid. (source 🗗)

Arachidonic acid functions as an important mediator of second-messenger pathways within the brain. (source 🗗)

Arachidonic acid cannot be synthesized in the body, and therefore must be included in the diet from various food sources. (source 🗗)

Where To Find Arachidonic Acid

Arachidonic acid is only found in animal-derived foods because plants cannot synthesize it. It means that you can find arachidonic acid in meat, poultry, eggs, fish, and dairy foods. (source 🗗)

If you are interested in a list of foods where you can find this nutrient. Go to our nutrition tool and check out arachidonic acid .

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Sara Niemelä

co-founder Care Omnia, Head Content Creator


I’m a wife and a mother of three. I enjoy the outdoors, cooking, and spending time with my family. Nutrition is my passion. I have spent thousands upon thousands of hours reading, analyzing, categorizing and comparing research studies. Nutrition is the foundation you build a healthy and fulfilling life upon!