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3/5 Moderate evidence

Body composition evidence brief

Essential amino acids

Can support muscle protein synthesis when amino acid intake is inadequate, but complete protein is usually a better default.

Useful if intake is low hypertrophy / recovery 5 linked sources Content audit 2026-05-04

Headline Finding

ISSN stand: EAAs stimulate MPS without non-essential amino acids, but complete protein is usually simpler.

Dose Context

Use only when protein meals or powders are impractical.

Important Caveat

Not automatically additive when total daily high-quality protein is already sufficient.

Source Drawer

Linked Research

5 papers and evidence links - audit 2026-05-04
  1. Position stand ISSN EAA position stand
  2. Position stand ISSN protein position stand
  3. Full text ISSN EAA full text
  4. Meta-analysis Protein dose-response meta-analysis
  5. Meta-analysis Protein timing meta-analysis

How To Read This Rating

The score reflects evidence that the supplement does its stated job. Some jobs are direct, such as strength, endurance, or recovery; others are indirect, such as sleep, mood, appetite, or health support. A real effect can still receive a cautious practical rating when dose, safety, product quality, or audience fit remain uncertain.

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