Leucine is an amino acid that functions as a building block for protein, according to a literature review by experts from the Ministry of Agriculture in China. What’s even more important is that it’s an important regulator of protein and fat metabolism.
It activates the mTOR pathway, which is crucial for muscle protein synthesis. In addition, it promotes the growth of mitochondria, which are cellular energy centers essential to cell health and longevity. Leucine is particularly important as a nutrient in aging adults, lactating women and people on calorie-restricted diets. Leucine should be taken to cut fat and increase muscle mass.