When people eat a diet with only 10% protein, they tend to consume more calories overall because they eat more savory snacks between meals, not because they eat larger meals. This suggests that lower protein levels may trigger more frequent eating starts, not reduced fullness.

When people reduce the amount of protein in their diet to 10% of their total calories, they tend to eat more total calories without trying.

When people consume a diet with only 10% protein, they may eat more total calories, but their protein intake still remains lower than on higher-protein diets, suggesting the body does not fully adjust energy intake to restore protein levels.

Even though protein makes up a small and consistent portion of most diets, it might affect how much food people eat by influencing hunger and fullness, which could contribute to or reduce obesity.

People who eat a breakfast with 10% protein feel hungrier between 1 and 2 hours after eating than those who eat a breakfast with 25% protein.

When the proportion of protein in the diet is lowered from 15% to 10% of total calories, people tend to eat more total food to maintain their protein intake, resulting in higher overall energy consumption.