Frequently Asked Question
Health & NutritionCan You Build Muscle on a Vegan Diet?
Last reviewed: April 12, 2026
Summary
Yes. Multiple systematic reviews and meta-analyses of RCTs confirm that plant-based diets produce equivalent strength and muscle outcomes when protein intake is adequate and leucine-rich sources are included.
Supported by 2 cited sources
Evidence Summary
What the Systematic Reviews Show The claim that vegans cannot build muscle has been thoroughly investigated: - A 2025 systematic review and meta-analysis of randomized controlled trials found that plant-based diets do not compromise muscular strength or result in inferior strength improvements compared to omnivorous diets (Lim et al., 2025, Sports Medicine - Open).
- A 2024 meta-analysis found plant protein supplementation produces comparable outcomes to animal protein when
Supporting Evidence
Based on multiple RCTs comparing plant-based and omnivorous diets for strength outcomes.
The leucine threshold for maximal MPS is approximately 2.5-3g per meal. Plant proteins can achieve this with leucine supplementation or appropriate food combinations.
Sources & Evidence
2 sources cited across 2 claims
1
Plant-based diets do not compromise muscle strength
Meta-Analysis2
Leucine-matched plant protein equals whey for MPS
RCTMuscle Protein Synthesis in Response to Plant-Based Protein Isolates With and Without Added Leucine Versus Whey Protein — Pinckaers PJM et al. (2024)