How many studies support Protein?

A foundational meta-analysis and meta-regression established that protein supplementation meaningfully augments resistance-training-induced gains in muscle mass and strength in healthy adults, and this has been extensively replicated in older adults with sarcopenia specifically, including network meta-analyses comparing different protein types and dosing strategies. That's backed by 10 published studies in Vitaebase's database, including 8 meta-analyses, the most recent from 2024 -- a fairly substantial body of research for a single topic.