Research
Metabolic adaptation
Total protein intake was inversely related to lean mass in females only (Lean mass index: β= −0.84, Appendicular lean mass index: β= −0.35).
Practitioners should be cautious about recommending high total protein intake for females aiming to preserve lean mass.
StrongRefutesmedium confidence
Total protein intake was inversely related to lean mass in females only (Lean mass index: β= −0.84, 95%CI: −1.06–−0.62; Appendicular lean mass index: β= −0.35, 95%CI: −0.48–−0.22).
Why this rating
Based on a large cross-sectional study design.
Source
The Relationships between Total Protein Intake, Protein Sources, Physical Activity, and Lean Mass in a Representative Sample of the US Adults
Furong Xu et al. · Nutrients · 2020
DOI 10.3390/nu12103151
cross-sectional · n=7547Cited 3×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
More from this paper
Related findings · Metabolic adaptation
This is one finding among thousands. Every one is graded and traced to its source, so you can see what the evidence actually supports. Browse the research →