Ingredient

Soy

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Source
Not animal-derived
Allergen
No
Role in food
Soy is widely used in packaged foods as a source of plant-based protein, a …

What it is

Soy refers to soybeans, which are a type of legume grown globally. They are processed into many forms for food, including soy flour, soy protein, soy oil, and fermented products like tofu and tempeh.

Why it's used

Soy is widely used in packaged foods as a source of plant-based protein, a thickener, and an emulsifier. It can be found in products like pasta, frozen meals, soups, and baked goods, contributing to texture and nutritional content.

Health notes

Soy and its derivatives are generally recognized as safe (GRAS) by the FDA for use in food. Some research has explored the potential health effects of soy, particularly regarding its phytoestrogen content and effects on hormone-sensitive conditions. The scientific evidence on these topics is mixed, and more research is ongoing. JECFA has evaluated some soy-derived ingredients, such as soy lecithin, and has not specified an acceptable daily intake for soy protein itself.

Allergen info

Soy is one of the nine major food allergens identified by the FDA.

Products containing Soy

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Last updated: September 28, 2026

Note: This site presents label data from USDA FoodData Central for general information. It is not medical advice. Check the package label; formulations change.