Evidence by design
Randomized human trials can test outcomes under specified conditions. Animal and digestion models explore mechanisms and protein quality. Ex-vivo systems examine human-derived microbiota outside the body. Life-cycle assessments model environmental scenarios. None should be mistaken for another.
The Impact of Oral Whey Protein and Yeast Protein Supplementation for 6 Months on Skeletal Muscle Mass, Strength, and Function in the Elderly
Walking speed and SPPB improved more in supplemented groups than control. Muscle mass and handgrip strength showed no significant between-group differences.
Bai Huijing et al. · 2026 · Food Science & Nutrition 14:e71552
DOI 10.1002/fsn3.71552 ↗