People who eat a high-protein breakfast may eat about 420 fewer calories later in the day than those who skip breakfast, mostly because they eat less carbs and fat.

Scientific Claim

In healthy young professionals (n=13), consuming a 350-kcal high-protein breakfast tends to reduce ad libitum food intake by approximately 420 kcal per day compared to skipping breakfast (1831 vs. 2251 kcal, p=0.087), primarily through reduced intake of carbohydrates and fats.

Original Statement

“The consumption of the HP breakfast tended to decrease ad libitum food intake (1831 ± 284 kcal) vs. SKIP (2251 ± 365 kcal, p = 0.087), through the reduction in ad libitum carbohydrate and fat intake.”

From study:A pilot study assessing whether the consumption of a protein‐rich breakfast improves appetite control, eating behavior, and sleep quality compared to skipping breakfast in healthy young professionals

Evidence Quality Assessment

Claim Status

appropriately stated

Study Design Support

Design supports claim

Appropriate Language Strength

probability

Can suggest probability/likelihood

Assessment Explanation

The authors used 'tended to decrease' and reported p=0.087 appropriately. The effect size and consistency with appetite metrics justify cautious interpretation.

Evidence from Studies

Supporting (1)

A pilot study assessing whether the consumption of a protein‐rich breakfast improves appetite control, eating behavior, and sleep quality compared to skipping breakfast in healthy young professionals

Randomized Controlled Trial

Human

This study found that when healthy young adults ate a high-protein breakfast, they ended up eating about 420 fewer calories later in the day, mostly by eating less carbs and fat, even though the result wasn’t quite strong enough to be called definite.

Contradicting (0)

No contradicting evidence found

Source Study

A pilot study assessing whether the consumption of a protein‐rich breakfast improves appetite control, eating behavior, and sleep quality compared to skipping breakfast in healthy young professionals

Score: 46

DOI: 10.1096/fasebj.31.1_supplement.443.1

Similar Assertions

After eating a high-protein breakfast, people didn’t eat more protein later — they just ate less carbs and fat.

86%

The day after eating a meal with less protein than usual, people tend to eat about 60 fewer calories than normal.

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When people eating a high-protein diet skip their planned meal and choose something with less protein, they tend to eat about 260 more calories that day.

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Eating a high-protein breakfast might make people feel a bit fuller during the day, but the evidence isn't strong enough to be sure.

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When people eat a meal with less protein than usual, they tend to eat more total calories that day — and this pattern holds up even when accounting for other factors.

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