Soy Allergy Treatment: Symptoms & Get Care from Home

Soy allergies occur when the immune system mistakenly identifies proteins found in soybeans as harmful. It is one of the most common food allergies, particularly among children, but it can also persist into adulthood. Soybeans are a widely used ingredient in processed foods, including tofu, soy milk, and various packaged products, making it challenging for individuals with soy allergies to avoid accidental exposure. Soy is also commonly used in baby formulas and snacks, increasing the need for vigilance in younger children. Managing a soy allergy involves avoiding soy-containing foods and products, which can require careful label reading and constant monitoring.

Approximately 0.4% of infants in the U.S. have a soy allergy. It is the eighth most common food allergy among children in the United States, though many children outgrow it by the age of 10. Despite this, soy allergies can persist into adulthood, and some people may even develop an allergy to soy in adulthood. A study found that up to 88% of patients with a soy allergy had peanut allergy or were significantly sensitized to peanuts. Individuals with soy allergy were more likely to be allergic or sensitized to major allergens including peanuts, tree-nuts, egg, milk and sesame than to non-peanut legumes such as beans, peas and lentils.

The severity of a soy allergy can range from mild symptoms, like a skin rash or stomach upset, to life-threatening anaphylaxis. Reactions can occur after ingesting even trace amounts of soy, making it critical for individuals with soy allergies to be vigilant in checking food labels and asking about ingredients when eating out or at social events. Managing a soy allergy can affect many aspects of daily life. Children with soy allergies may struggle with eating at school, attending parties, or even participating in activities where food is involved.