The Claim
In healthy older adults with a constant total daily protein intake of 1.5 g/kg lean body mass, an even distribution of protein across meals (30% per meal) results in higher amino acid absorption rates and concentrations than a skewed distribution (15% at breakfast and lunch, 60% at dinner).
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.
When healthy older adults consume the same total amount of protein each day, spreading it evenly across three meals leads to higher amino acid absorption and blood levels than consuming most protein at dinner.
See the scientific wording
In healthy older adults, an even distribution of daily protein intake (30% per meal) leads to higher amino acid absorption rates and concentrations compared to a skewed distribution (15% at breakfast and lunch, 60% at dinner), when total daily protein intake is held constant at 1.5 g/kg lean body mass.
When protein is spread evenly across meals, amino acids enter the bloodstream steadily after each meal, keeping levels high enough to signal the body to stop breaking down muscle protein. This lets more amino acids stay in the blood and get used by the body. When most protein is eaten at dinner, amino acid levels spike only once, and the body breaks down more protein during the day, leaving fewer amino acids available overall.
What the research says
1 studyWhen older adults spread their protein evenly across three meals instead of eating most of it at dinner, their bodies absorbed more amino acids during the day. This helps their muscles stay healthier without needing more total protein.
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.