Essential Amino Acids are the nine protein building blocks the body cannot produce on its own. For healthspan, their primary role is to stimulate muscle protein synthesis (MPS) via the mTOR pathway, which is critical for maintaining muscle mass and function. Combating age-related muscle loss (sarcopenia) is a key strategy for preserving metabolic health and functional independence.
Verdict
Valuable for maintaining muscle, especially with suboptimal dietary protein intake.
HEALTHSPAN IMPACT
Moderate
RISK LEVEL
Low
EVIDENCE GRADE
A
MONTHLY COST
$30 - $60
Protocol
- Take 10-20 grams daily, often timed around exercise to maximize muscle protein synthesis.
- Use to supplement dietary protein intake, particularly in older adults to combat sarcopenia.
Flags
- Excessive long-term intake may place a burden on kidney function.
- High doses of branched-chain amino acids (BCAAs), a subset of EAAs, are speculatively linked to insulin resistance.
- Choose third-party tested products to avoid contamination with heavy metals or other impurities.