Systematic Reviewmoderate evidence
Effects of Protein Intake on Gut Microbiota in Physically Active Individuals: A Systematic Review and Meta-Analysis.
Nutrition reviews·October 20, 2026·PMID 42896859
Why it mattersProtein is a cornerstone of exercise nutrition, yet its impact on gut microbial ecology in active populations is poorly understood. This meta-analysis quantifies both diversity gains and potential losses of beneficial taxa like Bifidobacterium, informing how clinicians and nutritionists weigh protein dosing and source selection for gut health alongside performance goals.
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