The Claim
In healthy older men, a 14-day habitual low protein intake of 0.7 g/kg/day increases postprandial plasma exogenous phenylalanine availability by approximately 5 percentage points (61% vs. 56%) compared to a high protein intake of 1.5 g/kg/day.
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.
In healthy older men, eating 0.7 grams of protein per kilogram of body weight per day for 14 days results in higher levels of dietary phenylalanine in the blood after meals compared to eating 1.5 grams per kilogram per day.
See the scientific wording
In healthy older men, habitual low protein intake (0.7 g/kg/day) for 14 days increases postprandial plasma exogenous phenylalanine availability by approximately 5 percentage points (61% vs. 56%) compared to high protein intake (1.5 g/kg/day), indicating enhanced efficiency of dietary amino acid utilization.
When less protein is eaten regularly, the body slows down how much it burns amino acids for energy, so more of the amino acids from the next meal stay in the blood instead of being used up.
What the research says
1 studyAfter eating less protein for two weeks, older men’s bodies kept more of the amino acids from their next protein meal in the blood, even though their muscles didn’t build more protein — meaning their bodies became better at holding onto those nutrients.
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.