The Claim
Older adults in the ELSA-Brazil cohort with protein intake in the second quartile (approximately 1.1–1.2 g/kg/day) had a 27% higher relative risk of muscle mass loss compared to those in the highest quartile.
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.
Older adults who consumed about 1.1 to 1.2 grams of protein per kilogram of body weight per day lost more muscle mass over time than those who consumed the highest amounts of protein in the study.
See the scientific wording
Older adults in the ELSA-Brazil cohort with protein intake in the second quartile (approximately 1.1–1.2 g/kg/day) had a 27% higher relative risk of muscle mass loss compared to those in the highest quartile, suggesting that current dietary guidelines may be insufficient for preserving muscle mass in aging populations.
When older adults eat too little protein, their muscles don't get enough leucine to turn on the signal that tells the body to build new muscle proteins. Without this signal, muscle proteins break down faster than they are replaced, so muscle mass decreases over time.
What the research says
1 studyEven older adults who ate more protein than the minimum recommended amount still lost more muscle than those who ate even more — suggesting the current advice might not be enough to keep muscles strong as we age.
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.