People who eat a high-protein breakfast sleep about 36 minutes less per night than when they skip breakfast, but the quality of their sleep doesn't change.
Scientific Claim
In healthy young professionals (n=13), consuming a 350-kcal high-protein breakfast significantly reduces total sleep time (TST) by approximately 36 minutes per night compared to skipping breakfast (381 vs. 417 min, p<0.05), without affecting sleep efficiency.
Original Statement
“Although the consumption of a HP breakfast led to less total sleep time (TST) (actigraphy: 381±13 min) vs. SKIP (actigraphy: 417±14min, p < 0.05), no differences in sleep efficiency (TST/Sleep Period) were detected.”
Evidence Quality Assessment
Claim Status
appropriately stated
Study Design Support
Design supports claim
Appropriate Language Strength
definitive
Can make definitive causal claims
Assessment Explanation
The p-value is <0.05 and the outcome is objectively measured via actigraphy. The claim is appropriately stated with definitive language as the evidence meets significance thresholds.
Evidence from Studies
Supporting (1)
People who ate a high-protein breakfast slept about 36 minutes less than when they skipped breakfast, but they still slept just as well—meaning they didn’t feel more tired, even though they slept less.