Overview
Leucine is the essential amino acid that directly activates mTORC1, the master regulator of protein synthesis. A meal must contain a "leucine threshold" (approx 2.5-3g) to effectively trigger the muscle-building machinery.
Health Goals Impacted 1
This item supports, tracks, or is required for the following health goals:
Triggers the mTOR anabolic pathway.
Leucine is unique among amino acids because it acts as a signaling molecule, not just a building block. It tells the cell "we have enough fuel to build."
Older adults often have "anabolic resistance," meaning they need more leucine per meal (3-4g) to trigger the same growth response as a younger person. Supplementing free-form leucine can bridge this gap.