Soy Allergy: Learn about Hidden Sources of Soy

Written By: Sofia Layarda, MPH

Title: Master of Public Health

Alumni: University of California, Berkeley

Last Updated on:

A soy allergy means that the person cannot tolerate the soy protein and must avoid all possible sources. Many packaged foods contain some form of soy product. In their book “Better Baby Food”, registered dietitians Daina Kalnins and Joanne Saab provide the following table for words that indicate the presence of soy in a food product. If any of these appears on a label, it is best to avoid the food.

Soy Milk

Soy Allergy: Avoid These Ingredients

  • edamame
  • miso
  • mono-diglyceride
  • natto (Japanese fermented soybeans)
  • tofu (soybean curds)
  • okara (soy pulp)
  • soya, soja, soybean, soyabean
  • soy protein (isolate / concentrate)
  • tempeh
  • TSF (textured soy flour)
  • TSP (textured soy protein)
  • TVP (textured vegetable protein)*
  • yuba (tofu skin)

* Textured vegetable protein can come from different vegetable sources, including soy.

You may also see the words “soy lecithin” on a label. Soy lecithin is a soy fat, not protein, and is often tolerated by those allergic to the soy protein. However, in some circumstances, very sensitive individuals can react to it.

Health, Lifestyle, Nutrition 101

healthy gut, kid's nutrition, soy


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