Soy allergy is a common food allergy that occurs when the immune system reacts to proteins found in soy. It is especially prevalent in children and can cause symptoms ranging from mild to severe, including anaphylaxis. Soy is present in many foods and products, and while this allergy often appears in early childhood, some children may outgrow it over time.
People with soy allergies may also be sensitive to other legumes, though cross-reactivity is generally low. However, they should be cautious with: