The Claim

Protein consumption results in a higher thermic effect of feeding in humans than carbohydrate or fat consumption.

Source: Thermic effect of feeding in man: increased plasma norepinephrine levels following glucose but not protein or fat consumption.

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports
20score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

Quantitative
1 study reviewed
In plain English

Eating protein causes the body to burn more calories during digestion than eating the same amount of carbohydrates or fats.

See the scientific wording

Protein consumption elicits a greater thermic effect of feeding in humans compared to carbohydrate or fat consumption, suggesting differences in postprandial energy expenditure based on macronutrient composition.

Why this might work

When you eat protein, your body uses more energy to break it down and rebuild it into new proteins, which burns more calories than breaking down carbs or fats.

Supported mechanismbased on 1 study

What the research says

1 study
  1. Study: Thermic effect of feeding in man: increased plasma norepinephrine levels following glucose but not protein or fat consumption.

    When you eat protein, your body uses more energy to digest it than when you eat carbs or fats, and this study confirms that. So yes, protein makes you burn more calories just by digesting it.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

Fit Body Science verdict — we translate health claims into clear verdicts backed by peer-reviewed research.

Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.