The Verdict Library

Does eating more protein help you lose weight?

The verdict

Yes. Protein is the most useful macronutrient for fat loss, and the evidence is strong.

Higher protein preserves muscle and controls hunger in a calorie deficit. Strong evidence.

Protein does two jobs at once. It is the most filling thing you can eat per calorie, which means you naturally eat less without white-knuckling it. And it gives your body the raw material to hold onto muscle while the fat comes off, which keeps your metabolism from sliding down with the scale.

Trials consistently show higher-protein diets beat lower-protein diets on hunger, on muscle retention, and often on total loss, even when calories are matched. This is one of the least controversial findings in nutrition.

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GradeMyHabits grades everyday habits against published research. It is not medical advice. Talk to your doctor before changing medication, fasting beyond a day, or starting an intense program with a health condition.