Eating more protein makes your muscles bigger, and bigger muscles burn more calories all day—even if digestion doesn’t.
Scientific Claim
Increased fat-free mass resulting from elevated muscle protein synthesis is the primary mechanism for sustained elevation in total daily energy expenditure associated with high-protein diets, not diet-induced thermogenesis.
Original Statement
“The reason for this is that much of the benefit or thermogenesis of high protein diets is likely related to the increase in muscle protein synthesis. See, when you consume protein, the body preferentially uses this for muscle protein synthesis. This is why consuming protein is beneficial for strength development and muscle hypertrophy. You consume more protein, protein gets into your muscles, you get bigger muscles and it's that higher fat free mass also that gives you a sustained advantage in terms of total daily energy expenditure.”
Context Details
Domain
nutrition
Population
human
Subject
increased fat-free mass from muscle protein synthesis
Action
drives
Target
sustained elevation in total daily energy expenditure
Intervention Details
Evidence from Studies
Supporting (0)
Contradicting (2)
The study found that eating more protein burns more calories, but it didn’t check if that’s because muscles are growing — so we don’t know if the claim about muscle growth being the main reason is true.
Effects of Varying Protein Amounts and Types on Diet-Induced Thermogenesis: A Systematic Review and Meta-Analysis
This study found that eating more protein burns more calories mainly because your body works harder to digest it, not because you build more muscle. The claim says muscle growth is the main reason, but the study didn’t even measure muscle growth.