Soy Allergy:  Common Food Allergies

Many children with cow's milk allergy also have a soy allergy. For that reason soy formulas are not always the best option for milk allergic children.

Once a diagnosis is made, a diet completely free of soy must be followed. Although this may seem easy, it is an ingredient used in many processed foods, baked goods, baking mixes, cereals and soups.

Symptoms of Soy Allergy

An allergy to soy can cause symptoms such as:

  • Asthma,
  • Stuffy nose
  • Hives
  • Tissue swelling
  • Gastrointestinal problems

As mentioned above, an estimated 30-50% of babies allergic to cow’s milk protein also develop an allergy to soy when given a soy based formula.

It can also cause eczema in children, and in infants the allergy can cause loose stool and diarrhea, abdominal discomfort, irritability, crying, intestinal blood loss, anemia and failure to thrive.   Respiratory symptoms include cough, asthma, wheezing and rhinitis.

soy allergy child


Soy protein is the protein people are allergic to. Below is a list of ingredients that indicate its presence.

Ingredients that Indicate the Presence of Soy in a Food

  • Tofu
  • Okara
  • Supro
  • Yuba
  • Soy nuts
  • Soybeans
  • Soy grits
  • Soy protein isolate
  • Kyodofu Shoyu
  • Tamari
  • Soy milk
  • Soy sauce
  • Soybean paste
  • Soy albumin
  • Soy lecithin
  • Miso
  • Sobee
  • Tempeh
  • Soy beverage
  • Soy sprouts
  • Soy flour
  • Soy protein
  • Textured Vegetable Protein (TVP)

The diet of a child allergic to soy can contain a wide variety of foods as long as the ingredients above are eliminated from the diet. If you have any questions or are having trouble planning a diet, make an appointment with usor consult a dietitian in your area. We will be able to ensure your child is eating a balanced diet free of any food your child is allergic to.