What is Leucine?

Leucine is an amino acid that is especially key in the contexts of muscle protein synthesis and fitness. It plays a critical role in stimulating the mTOR pathway, which is essential for muscle growth and cellular health. Due to its effects on muscle and cellular growth, leucine is highly valued in resistance training and bodybuilding communities. It is also considered to influence aging due to its role in promoting cellular growth 1.

Leucine has been demonstrated to be a significant driver in the synthesis of muscle proteins. Consequently, individuals who are focused on building muscle or maintaining muscle mass, including those following plant-based diets, often aim to ensure sufficient intake of leucine either through diet or supplementation 2.