Ingredient
Isolated soy protein
What is Isolated soy protein?
Isolated Soy Protein is a highly refined protein derived from soybeans. It is produced by removing most fats and carbohydrates, leaving behind a product that is at least 90% protein by weight.
It is used to increase the protein content of products and improve texture in a variety of foods, including protein bars, shakes, and meat substitutes. The health evidence on soy protein is mixed, with some studies suggesting potential benefits for heart health while others raise concerns about hormonal effects due to its phytoestrogen content.
When you see isolated soy protein on a label, it indicates a processed form of soy, which may not provide the same health benefits as less processed soy foods like tofu or edamame.
Commonly found in: protein supplements, meat alternatives, meal replacement shakes, baked goods, snack bars
What to watch
- Concerns have been raised about phytoestrogens potentially impacting hormone levels.
- Some individuals may experience allergic reactions to soy protein.
Benefits
- Rich in protein and can help increase dietary protein intake.
- May support muscle maintenance and growth, similar to other protein sources.
Isolated Soy Protein is generally recognized as safe (GRAS) by the FDA for use in foods.
Research offers mixed results, with some studies highlighting benefits for heart health and others suggesting potential hormone-related concerns.
Isolated Soy Protein is plant-derived and suitable for vegan diets.
Sources: GRAS Notice for Isolated Soy Protein · Soy Protein and Human Health: A Review
Scout's take
Isolated soy protein is often highly processed and may contain anti-nutrients, which can be a concern for some consumers.
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