Valine is an essential branched-chain amino acid (BCAA) that must be obtained through dietary sources. Its critical physiological roles include:
Supporting muscle metabolism as a key substrate for protein synthesis and muscle tissue repair
Maintaining glucose regulation via gluconeogenesis during fasting/exercise
Providing cellular energy through direct oxidation in muscle mitochondria
Modulating neurological function as precursor to GABA (calming neurotransmitter)
Optimal dietary sources:
Meat, poultry, fish, eggs, dairy, soy, mushrooms, peanuts, whole grains
Inadequate valine levels may impair muscle recovery, reduce exercise endurance, and disrupt glucose homeostasis during metabolic stress.