Branched-chain amino acid

Branched-chain amino acid

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Structures of the three branched-chain amino acids: leucine (top), isoleucine (middle), and valine (bottom)

Branched-chain amino acids (BCAAs) are amino acids which have aliphatic side-chains with a branch (a central carbon atom bound to three or more carbon atoms). Among the proteinogenic amino acids, there are three BCAAs: leucine, isoleucine, and valine.

Structure and Function

BCAAs are classified as essential amino acids as they cannot be synthesized by the body and must be ingested through diet. They are crucial for protein synthesis and muscle repair, energy production, and immune function.

Dietary Sources and Supplements

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BCAA-rich foods include lean meats, dairy products, and legumes

BCAAs are found in protein-rich foods such as lean meats, dairy products, and legumes. BCAA supplements are also widely available and often used by athletes and bodybuilders to boost muscle growth and enhance exercise performance.

Health Benefits and Risks

BCAAs have been studied for their potential benefits in reducing muscle soreness and promoting muscle protein synthesis. However, excessive intake of BCAAs may lead to certain health risks such as insulin resistance and potential impact on mood.

See Also

• Protein (nutrient)
• Essential amino acid
• Dietary supplement