Is Protein worth prioritizing?

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. Weighing that against the numbers, Protein is a strong candidate to prioritize — it combines strong evidence (82/100) with a high estimated impact on longevity (68/100).