Peer-reviewed study
Carbs support training, but they are not a hypertrophy switch
The Effect of Carbohydrate Intake on Muscle Hypertrophy: A Systematic Review and Meta-analysis
Source details
PubMed-linked study details.
- Authors
- Henselmans, Varvik, and Izquierdo
- Journal
- Sports Medicine. 2026.
- Identifiers
- PMID 41712097 · DOI 10.1007/s40279-025-02341-z
Honest limits
What this study does not prove.
A high-carbohydrate target does not fit everyone. Goals, calories, preferences, training volume, and digestion determine the useful amount.
Kris's practical takeaway
Here's what to do with it.
Carbs can fuel training and make a plan easier to follow. They do not replace progressive lifting or sufficient protein.
Ways to use it
Safe ways to apply it.
Carbs fuel the work, they do not do the work
Muscle growth still needs lifting
Stop arguing macros without checking performance
Related questions
Questions this research helps answer.
Related guides and studies
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FAQ
Quick questions
What is the practical takeaway from this study?
Carbs can fuel training and make a plan easier to follow. They do not replace progressive lifting or sufficient protein.
What does this study not prove?
A high-carbohydrate target does not fit everyone. Goals, calories, preferences, training volume, and digestion determine the useful amount.
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