The Claim
Yeast protein has higher protein digestibility-corrected amino acid score (PDCAAS) and digestibility-essential amino acid score (DIAAS) compared to plant proteins (soy, wheat, pea) but lower scores compared to animal proteins (whey), attributed to its lower digestibility as measured in growing rats and in vitro models.
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.
Yeast protein scores higher than plant proteins but lower than animal proteins on protein quality measures. The lower digestibility of yeast protein causes this difference, according to rat and cell studies.
See the scientific wording
Yeast protein demonstrates higher protein digestibility-corrected amino acid score (PDCAAS) and digestibility-essential amino acid score (DIAAS) than plant proteins (soy, wheat, pea) but lower than animal proteins (whey), primarily due to its lower digestibility in growing rats and in vitro models.
Yeast protein is harder for the body to break down during digestion than animal protein but easier than some plant proteins. This means fewer building blocks (amino acids) get into the bloodstream, which lowers the quality scores.
What the research says
1 studyThe study shows that yeast protein is better for you than protein from plants like soy or wheat, but not as good as protein from milk (whey), because your body has a harder time digesting yeast 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.