Southwest Allergy & Asthma Center



6100 Windcom Court,
Suite 101
Plano, Texas 75093

Serving: Plano, Frisco, Allen, McKinney, Carrollton, Richardson, Lewisville, Garland, Dallas, The Colony, Addison, Coppell, Little Elm, Celina, Prosper, Sachse, Murphy, Wylie, Rockwall, Lucas and Rowlett

(972) 398 - 3500Telephone:
(972) 398 - 3512FAX:

In the Texoma Medical Plaza adjacent to the new Texoma Medical Center
5012 South US HWY 75,
Suite 150
Denison, Texas 75020

Serving: Denison, Sherman, Bonham, Gainesville, Pottsboro, Van Alstyne, McKinney, Prosper, Durant (OK) and Madill (OK)

(903) 463 - 8400Telephone:
(903) 463 - 8500FAX:

7785 Eldorado Pkwy,
Suite 500
McKinney, Texas 75070

Serving: McKinney, Frisco, Allen, Celina, Prosper, Sachse, Murphy, Wylie, Rockwall, Lucas and Rowlett

(972) 542 - 0500Telephone:
(972) 398 - 3512FAX:

In Twin Creeks Medical Center Two
1101 Raintree Cir,
Suite 140
Allen, Texas 75013

Serving: McKinney, Frisco, Allen, Celina, Prosper, Sachse, Murphy, Wylie, Rockwall, Lucas and Rowlett

(469) 656 - 1057Telephone:
(972) 398 - 3512FAX:

12950 Dallas Pkwy,
Suite 700
Frisco, Texas 75033

Serving: McKinney, Frisco, Allen, Celina, Prosper, Sachse, Murphy, Wylie, Rockwall, Lucas and Rowlett

(972) 569 - 8500Telephone:
(972) 398 - 3512FAX:

Green Going Green to help you breathe easier!

Soy Allergy

What is a soy allergy?

Soy allergy is an abnormal immune reaction to the proteins found in soy.

Is soy allergy common?

Soy allergy is a relatively common food allergy in young children and usually presents in infancy. Approximately 0.4% of children will be allergic to soy.

What are the symptoms of an allergic reaction to soy?

Classic allergic reactions usually include a red, itchy rash called hives that occurs within minutes of ingesting foods containing soy. Hives can progress to or occur as part of a more serious allergic reaction, called anaphylaxis. Anaphylaxis is a life-threatening allergic reaction that may include any of the following symptoms: wheezing or other breathing problems; vomiting, diarrhea or stomach cramps; face, mouth, or throat swelling; or signs of shock, including low blood pressure, dizziness, and passing out.

Many individuals who are soy allergic may have worsening of their eczema several hours to days after ingesting soy products.

Are there other types of reactions that can occur with soy ingestion?

Some infants with soy intolerance may only have gastrointestinal symptoms. These can include, bloody stools, vomiting, diarrhea and in severe cases weight loss or poor growth.

Do children outgrow soy allergy?

About 80% of children will have resolution of their soy allergy by school age.

Many foods contain soy, what things should I avoid?

If you are allergic to soy, you should avoid the following: edamame; miso; natto; shoyu sauce; soy; soya; soybean; soy oil; soy sauce; tamari; tempeh; textured vegetable protein; tofu; Worcestershire sauce

*Asian cuisine often includes soy products. Vegetable broth, vegetable gum, and vegetable starch, cereals and some baked goods may also contain soy.

How and when can I reintroduce soy to my child?

Although most types of soy allergy will resolve with time, you should consult with your physician regarding when and how to reintroduce soy into your child’s diet. Your physician may use skin or blood tests to determine when it is safe to reintroduce soy into the diet.

What formulas can I use for my child?

Many children with soy allergy can use regular non-soy formulas. However, many children with soy allergy are also allergic to cow’ milk. If this is the case, there are formulas and milk substitutes that are safe for children with milk and soy allergy. These include rice milk, protein hydrolysate formulas, and other supplements. If your child is milk allergic or intolerant discuss appropriate substitutes with your physician.

Is it safe to breast-feed my child?

Breast-feeding is generally safe in children with soy allergy if the mother avoids foods containing soy products.