# Protein and muscle

Not yet reviewed by a human. 2 papers are in the library.

**Graded Moderate**: Narrative review of protein intake and amino acid quality in older adults, drawing on existing human studies without a systematic search or pooled analysis.

## Papers (2)

- [Why Standard Protein Advice May Fall Short for Older Adults](https://longevity-switzerland.com/en/research/why-standard-protein-advice-may-fall-short-for-older-adults) · Moderate · 2026 · Frontiers in nutrition
- [Why How You Cook Meat Matters for Older Bodies That Absorb Less](https://longevity-switzerland.com/en/research/why-how-you-cook-meat-matters-for-older-bodies-that-absorb-less) · Preliminary · 2026 · Food science of animal resources

## How this map is computed

A mark's size is the number of papers we hold on that pairing. It is a count, not a weighting by study design or sample size.

The fill shows the strongest grade in the cell. One Strong paper among four Preliminary ones still fills it dark, so open the cell to see the rest.

Grades and verdicts are assigned by a named person, never by counting.

An empty cell is a finding: nobody in our library has run that trial yet.

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_Canonical: https://longevity-switzerland.com/en/evidence/protein/muscle · Part of Longevity Cities_