Evidence-based nutrition

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The Definitive Guide

Plant Protein Builds the Same Muscle — and One Area Does Better

5 studies. 2,567 participants. The evidence on plant protein for muscle — from daily dose to the creatine advantage.

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Myths we killed 4

You need meat to build real muscle.

Plant protein is just lower quality — nothing you can do about it.

Soy lowers your testosterone.

It’s harder to build muscle on plant protein after 40.

6 studies 1 RCTs 3 meta-analyses Triple-verified Explore cluster →

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What the evidence says

How Much Protein Do You Need on a Plant-Based Diet to Build Muscle? Researchers pooled results from 43 trials involving over 1,500 people and found that when someone eats enough total protein each day — roughly 1.6 grams per kilogram of… 2:47 · 4 studies

Is It Harder to Build Muscle on a Plant-Based Diet After 40? Plant protein builds the same amount of muscle as animal protein after 40. The lab tests that appeared to show a gap in older adults were actually comparing… 2:34

Can Plant Protein Match Whey for Muscle Growth with Leucine or Blending? When researchers combined three plant proteins — wheat, corn, and pea — in specific proportions, the blend triggered the same amount of muscle building as milk protein. A… 2:37 · 3 studies

Does Soy Lower Testosterone in Men? Researchers pooled every randomized trial they could find in which men ate soy and had their hormones measured. Testosterone did not change — not at low doses, not… 2:49 · 3 studies

Is Creatine More Effective for Vegetarians and Vegans? Vegetarians and vegans carry lower creatine levels because creatine comes mainly from meat. When they supplement, their muscles absorb roughly twice as much creatine as a meat-eater's would… 2:34 · 1 studies

The papers we actually read

3 Plants, 1 Ratio: The Blend That Matched Milk Protein A plant protein blend (wheat + corn + pea, 2:1:1) matched milk protein for muscle building in 24 young men… 2:00 · Pinckaers et al. · 2022 · The Journal of Nutrition · n=24

Creatine Works Differently If You Don’t Eat Meat Vegetarian muscles increased total creatine stores by 76% with supplementation — more than double the 35% increase in omnivore muscles.… 3:05 · Kaviani et al. · 2020 · International Journal of Environmental Research and Public Health · n=355

How Much Soy Would It Take to Affect Testosterone? Eight randomized trials across 5 countries unanimously found soy has no effect on testosterone at any dose tested, from 49… 2:22 · Rajaie et al. · 2025 · Food Frontiers · n=489

What 5 Hours of Lab Data Miss About Plant Protein and Muscle Animal protein triggers slightly more acute muscle protein synthesis than plant protein. The gap: 0.004 percentage points per hour, at… 2:22 · Mendes et al. · 2026 · Journal of the Academy of Nutrition and Dietetics · n=321

43 Trials Exposed the Real Difference Between Plant and Animal Protein for Muscle Soy protein and whey protein build the same muscle. Seventeen head-to-head trials found a difference smaller than what body scanners… 2:47 · Reid-McCann et al. · 2025 · Nutrition Reviews · n=1,538

Vegan vs Meat-Eater Muscle: What 5 Tests Revealed Five independent muscle measurements — body scan, ultrasound, and individual fibers under a microscope — showed zero difference between habitual… 2:18 · Hevia-Larraín et al. · 2021 · Sports Medicine · n=38

Protein

The thing the filter treats as a downgrade is the thing that solves the digestibility problem.

The Whole-Food Rule That Breaks for Plant Protein

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Protein

A five-hour muscle-building snapshot is a poor predictor of whether muscle actually accumulates across a training cycle.

Potato Protein Matched Milk in the Lab. The Lab Was Five Hours Long.

2 min read 393 words

Protein

You've already answered this one. Plant protein builds the same muscle as animal protein — you read the evidence, maybe cited the numbers in a conversation you were already winning. Building muscle after 50 is answered too; your muscle fibers can still hit their peak rate at the same ceiling as someone half your age. Two reassurances, both earned.

Plant Protein Builds the Same Muscle — Until Your Age Changes the Math

2 min read 502 words

BUILT TO PROVE OURSELVES WRONG

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About FitChef

No opinions. Just the science.

We go through hundreds of studies so you don't have to. Then we turn them into stories anyone can understand — and listen to on the go.

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The research

6 peer-reviewed studies

1 RCTs

5 claims verified

Triple-verified · DOI-linked · Kill-switched

In numbers

21stories

146claims

127studies reviewed

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