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Life is everything. Let's make it a healthy one!

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Life is everything. Let's make it a healthy one!

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What Is Leucine & What Foods Can I Find It In?

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3D-model of Leucine (src)

Leucine is an essential amino acid that is used in the biosynthesis of proteins, used as building blocks.

Leucine metabolism occurs in many tissues in our body, especially in the liver, adipose tissue, and muscle tissue.

Essential means that the body cannot synthesize it, and therefore must be ingested through our diet.

Leucine Is Important With Many Health Benefits

Leucine is one of nine essential amino acids in humans.

Leucine is important for protein synthesis and many metabolic functions. (source )

Leucine, together with isoleucine and valine, make up about one-third of muscle protein.

They are branched-chain amino acids. (source )

Leucine is beneficial in the regulation of blood-sugar levels and growth, among other things. You can see the benefits of leucine in Leucine: 6 Research-Backed Benefits .

You get leucine from foods

Leucine cannot be synthesized in the body, it must be obtained from the diet. (source )

Because leucine is available in many foods is deficiency rare. (source )

Foods You Can Find Leucine In

You find Leucine mostly in dairy and egg, legume, american indian and alaska native food, and seafood products.

Examples of food sources include

  • Egg White
  • Soy Protein Isolate
  • Bearded Seal
  • Beluga Whale Meat
  • Atlantic Cod
  • Spirulina
  • Soy Protein Concentrate

Foods That Contain Leucine In Our Nutrition Tool

You can find regularly updated top ranked lists of foods for over 200+ nutrients in our nutrition tool.

If you are interested in what foods contain the most Leucine we recommend you visit our tool.

Here's our top ranked list of foods that contain Leucine.

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've spent thousands upon thousands of hours reading, analyzing, categorizing and comparing research studies.