This allergy usually appears in the early years of life and although the vast majority of children overcome it, many continue to be allergic in adulthood. If you are allergic to soya, you should look carefully at product labels as many contain a percentage of this legume.
Hives, itching around the mouth, reddened skin, abdominal pain and swelling are some of the most common symptoms. But also, sometimes, it can cause a severe allergic reaction. Those who are allergic to soy should be very careful when eating processed foods, as there are many that may contain soy.