Is Soy Good for Plant-Based Athletes? The Truth About Protein, Hormones & Muscle Building

Greenletes Podcast

Greenletes Podcast
Is Soy Good for Plant-Based Athletes? The Truth About Protein, Hormones & Muscle Building
Aug 03, 2026
Natalie Rizzo, MS, RD

Should plant-based athletes eat soy? Does tofu lower testosterone? Is soy protein actually good for building muscle?

In this episode, sports dietitian Natalie Rizzo, MS, RD, breaks down the latest research on one of the most misunderstood foods in sports nutrition. You'll learn how soy compares to animal protein for muscle recovery, what the science really says about hormones, and how much soy athletes can safely eat.

You'll also get practical ways to add tofu, tempeh, edamame, and soy milk to your daily routine, without relying on protein powders.

In this episode you'll learn:

  •  Is soy a "complete" protein? 
  •  Does soy help build muscle? 
  •  Does soy lower testosterone or increase estrogen? 
  •  How much soy should athletes eat? 
  •  The best soy foods for recovery and performance 
  •  Easy ways to eat more soy every day

Apply to work with Natalie for 1-on-1 nutrition coaching! 

Have questions or want to request a show topic? DM us @greenletes

Check out Natalie's book đź“•: Planted Performance



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