Taking leucine supplements won’t help young athletes build more muscle, get stronger, or recover faster—even though leucine is known to trigger a muscle-growth signal in the body.
Evidence from Studies
Supporting (3)
Community contributions welcome
Leucine Supplementation Has No Further Effect on Training-induced Muscle Adaptations
Scientists gave trained guys extra leucine pills while they lifted weights for 12 weeks, and found they didn’t get bigger or stronger than those who took dummy pills — even though leucine is known to signal muscle growth, it didn’t help when they already ate enough protein.
This study looked at whether taking extra leucine helps fit young adults build muscle, get stronger, or recover faster — and found it doesn’t. That matches exactly what the claim says.
This study looked at whether taking extra leucine helps fit young adults build muscle, get stronger, or recover faster — and found it doesn’t. That matches exactly what the claim says.
Contradicting (0)
Community contributions welcome
Gold Standard Evidence Needed
According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.