Protein & Nutrition Blog – Marmels

Whey Protein vs Plant Protein: Which Is Better for Muscle?

Protein & Nutrition Blog – Marmels

Whey Protein vs Plant Protein: Which Is Better for Muscle?

by Mo Mandegar, PhD on Sep 10 2026
Ask a supplement aisle whether whey beats plant protein and you get averdict. Ask a nutrition department and you get a range. Whey isolatedoes score 1.09 on the Digestible Indispensable Amino Acid Scoreagainst 0.82 for pea protein, but a 2025 meta-analysis of 30randomized controlled trials found no difference in strength orphysical performance. Here is where the gap is real, and where itquietly closes.