Salad dressings, soups, meat analogues, beverage powders, cheeses, nondairy creamer, frozen desserts, whipped topping, infant formulas, breads, breakfast cereals, pastas,
Consuming foods containing soy protein or taking soy protein products is LIKELY SAFE. Taking dietary supplements with soy extracts is POSSIBLY SAFE when used short-term (up to 6 months). Soy can cause some mild side effects such as constipation, bloating, and nausea.  Soy protein is used in a variety of foods, such as salad dressings, soups, meat analogues, beverage powders, cheeses, nondairy creamer, frozen desserts, whipped topping, infant formulas, breads, breakfast cereals, pastas, and pet foods. Soy protein isolate has been used since 1959 in foods for its functional properties. Recently, soy protein popularity has increased due to its use in health food products, and many countries allow health claims for foods rich in soy protein. Soy protein is generally regarded as being concentrated in protein bodies, which are estimated to contain at least 60–70% of the total soybean protein Meat Alternatives. Meat alternatives, containing soy protein or tofu, are used to imitate meat, such as burgers, sausages, bacon and hot dogs. Generally, they are cholesterol-free and lower in fat than meat. They are excellent sources of protein, iron and B vitamins. A Guide to Foods Rich in Soy. Many foods containing soy — such as tofu, soy meat alternatives, soy sauce, soy flour and soybean oil — can be found in supermarkets as well as natural, health and Asian food stores. Foods containing soy protein are also a healthy alternative to meats and other animal products that contain cholesterol and saturated fat. Soy in Your Diet Soy foods and beverages have gained popularity, with sales increasing by nearly one third between 2003 and 2007. Soy foods are a great source of protein and contain other important nutrients, such as fiber, B vitamins, and omega-3 fatty acids. Listen. Foods high in protein such as fish, chicken, meats, soy products, and cheese, are all called “protein foods.” You may also hear them referred to as ‘meats or meat substitutes.”. The biggest difference among foods in this group is how much fat they contain, and for the vegetarian proteins, whether they have carbohydrate. Protein Foods. Foods high in protein such as fish, chicken, meats, soy products, and cheese, are all called “protein foods.” You may also hear them referred to as ‘meats or meat substitutes.”. 1 Soy sauce and soybean oil don’t contain soy protein, even though soy is part of their name. 2  Read the label. 3  Make sure the soy products you buy are also low in saturated fat, cholesterol, salt, and added sugar. 4  If you see soya on a packaged food, that's another word for soy. 
http://www.webmd.com/vitamins-supplements/ingredientmono-975-SOY.aspx?activeIngredientId=975&activeIngredientName=SOY https://en.wikipedia.org/wiki/Soy_protein https://www.ucsfhealth.org/education/a_guide_to_foods_rich_in_soy/index.html https://answers.yahoo.com/question/index?qid=20100321115800AA6miAR http://www.diabetes.org/food-and-fitness/food/what-can-i-eat/making-healthy-food-choices/meat-and-plant-based-protein.html http://www.webmd.com/cholesterol-management/features/soy-and-cholesterol
what foods contain soy protein