Soy allergy is usually quite mild, although life-threatening anaphylaxis is a distinct possibility in severe cases.
Soy products include soy sauce, soy protein, soy albumin, soy cheese, soy fiber, soy flour, soy grits, soy ice cream, soy milk, soy nuts, soy sprouts, soy oil, soy protein, and soy yogurt. Tamari and shoyu are both Japanese terms for soy sauce. The term soya is synonymous with soy.
Edamame, miso, natto, tempeh, textured vegetable protein, and tofu are all soy products.
Soy also appears in many Asian cuisines, as a base for a wide range of prepared Asian sauces (even if not labeled soy), in vegetable gum, vegetable starch, and vegetable broth.
“Meatless” vegetarian products often contain soy.