BCAAs enhance muscle growth more than protein
8.0Strong
evidence
evidence
The Claim
Many believe that branched-chain amino acids (BCAAs) can enhance muscle growth more effectively than whole protein supplements. This is based on their role in protein synthesis, particularly leucine.
Origin
This myth likely stems from marketing claims and early studies suggesting BCAAs stimulate muscle protein synthesis.
What Science Says
Research indicates that while BCAAs, particularly leucine, play a role in muscle protein synthesis, complete proteins containing all essential amino acids are more effective for muscle growth. A meta-analysis of randomized controlled trials (RCTs) found that protein supplements, not isolated BCAAs, showed significant benefits in muscle hypertrophy.
Verdict
Mostly False