The Claim
In healthy, young women aged 19–22, a high-protein, low-fat diet increases postprandial thermogenesis by approximately 100% compared to a high-carbohydrate, low-fat diet, with statistically significant differences observed after breakfast and dinner meals.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
In healthy women aged 19–22, eating a diet high in protein and low in fat causes a 100% higher increase in calorie burning after meals compared to a diet high in carbohydrates and low in fat, with the difference occurring after breakfast and dinner.
See the scientific wording
In healthy, young women aged 19–22, a high-protein, low-fat diet increases postprandial thermogenesis by approximately 100% compared to a high-carbohydrate, low-fat diet, with statistically significant differences observed after breakfast and dinner meals, suggesting that dietary protein content may elevate energy expenditure following meals.
When protein is eaten, the body breaks it down into amino acids and uses a lot of energy to process them, especially to remove waste nitrogen by making urea and building new proteins. This energy use generates heat, which raises the number of calories burned after meals.
What the research says
1 studyThis study found that when young women ate a diet high in protein and low in fat, their bodies burned about twice as many calories after meals as when they ate a high-carb, low-fat diet—especially after breakfast and dinner. So yes, protein makes your body work harder to digest food.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.