The Claim

Does eating more protein burn more calories after meals, and does body weight affect this?

Source: Effects of Varying Protein Amounts and Types on Diet-Induced Thermogenesis: A Systematic Review and Meta-Analysis

What the research says

Supports is higher

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

Supports
49score
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.

Cause and effect
1 study reviewed
In plain English

Eating a meal with more protein makes your body burn more calories right after eating — but only if you’re not overweight; if you are, this calorie-burning effect doesn’t happen as much.

See the scientific wording

Acute consumption of higher-protein meals (≥19.6% greater energy from protein) increases diet-induced thermogenesis by 45% (SMD: 0.45; 95% CI: 0.26, 0.65) in healthy adults with normal weight (BMI <23.8 kg/m²), but not in those with overweight or obesity, suggesting a weight-status-dependent metabolic response to protein intake.

What the research says

1 study

  1. Study: Effects of Varying Protein Amounts and Types on Diet-Induced Thermogenesis: A Systematic Review and Meta-Analysis

    This study found that eating meals with more protein burns more calories, but only in people who are not overweight — exactly what the claim says. If you're normal weight, protein helps your body burn more energy after eating; if you're overweight, it doesn’t have the same effect.

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.