Protein research: name the outcome first
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First published: · Updated: 2026-09-28T05:37:19.010Z
Historical backfill. Research cutoff: 2026-01-23
This edition uses a 2022 review as foundational context for nutrition claims. It was available before the historical cutoff. The selected question is about lean body mass during resistance training, not fueling a race.
This is a selected research digest, not an exhaustive account of the week. Retrospective search coverage was limited; older foundational papers are identified explicitly.
Topics: Fueling
Finding
In randomized trials of healthy adults undertaking resistance exercise, additional dietary protein produced a small extra gain in lean body mass compared with lower-protein control conditions.
Limitations: Evidence for this selected outcome was moderate. Lean body mass is not identical to muscle mass or running performance. Blinding and measurement methods varied; most interventions used animal protein. The review reported industry funding and author ties.
Evidence level: Moderate evidence
Interpretation
Before using a protein headline to change your diet, name the goal it addresses. A body-composition outcome cannot supply an endurance-fueling plan. This finding is relevant as context for adults doing resistance exercise; it is not a reason to buy a supplement or increase intake without considering your existing diet. No dose or product is recommended.
Further reading: current guides
Update history
- · Initial unpublished draft.
- · Weak selection removed after separate-session AI review; research gap retained.
- · Historical source screening and bilingual editorial revision completed; separate-session final review requested.