Soy protein powder is a popular plant-based protein supplement derived from soybeans. It is commonly used by individuals looking for a non-dairy and vegan protein source. For those with gluten sensitivities or celiac disease, understanding whether soy protein powder is gluten-free is essential for maintaining a safe diet.
Soy protein powder itself is naturally gluten-free because it is made from soybeans, which do not contain gluten1. Gluten is a protein found in wheat, barley, and rye, and soybeans do not belong to the same botanical family. Therefore, pure soy protein powder without added ingredients is generally safe for individuals with gluten intolerance or celiac disease.
While soy protein powder is naturally gluten-free, there is a potential risk of cross-contamination during processing or packaging. This can occur if the facility where the soy protein is processed also handles gluten-containing products. To ensure that the product is truly gluten-free, look for:
When selecting a soy protein powder, it’s important to choose high-quality brands that are transparent about their production processes. Some brands specifically state that their products are manufactured in gluten-free facilities to minimize the risk of cross-contamination2.