The Importance of Leucine for Muscle Protein Synthesis

The essential amino acids play a crucial role in our daily diet, especially leucine, which was discovered to be a unique signal for muscle protein synthesis around the year 2000. While younger adults can stimulate protein synthesis with small meals of 10-20 grams, adults over 40 require more than 30 grams, primarily due to the key role of leucine. Studies have shown that leucine is more critical for muscle protein synthesis in older adults compared to younger adults.

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