Becoming Aware of Soy Allergy Symptoms

Soybeans are among the nine most common food allergens for infants and adults, yet the use of soy proteins and soy flour is found in a vast number of products, including prepared broths, breads and other bakery items, ice cream, cheese and chocolate. Fast food restaurants commonly use soy oil for frying. Tuna canned in vegetable broth generally contains soy. For those suffering soy allergy symptoms, avoiding products containing soy can be difficult, as it isn’t always listed in the ingredient labels.


Soy tolerance is generally high, even among those who suffered soy milk allergies as babies. The amount needed to produce an allergic reaction to soybean products is approximately one hundred times higher than for other food allergies. Soy reaction is generally mild, although in some cases, it can be very severe. Allergic food reactions can result in anaphylaxis, a condition that involves skin rashes, face swellings and a drop in blood pressure. The onset is very rapid and can even result in death if medical attention is not given immediately. Anaphylaxis can also manifest as respiratory difficulties, including wheezing, a build up of mucus and shortness of breath. Rashes and face swelling do not have to be present in the


The Most Common Soy Allergy Symptoms
case of food allergy related respiratory symptoms.

I *like* soy lecithin

I *like* soy lecithin (Photo credit: massdistraction)

Soy Allergy Symptoms

The most common symptoms involve a tingling sensation in the mouth, hives, flushed skin or eczem a (scaly, itchy skin). An allergic reaction might result in abdominal pain, with diarrhea, nausea or vomiting. Symptoms that require immediate medical attention are constriction of the airways; making breathing difficult; shock, with a severe drop in blood pressure, a rapid, weak pulse, and drooling, with subsequent inability or difficulties in swallowing.

Soy allergy symptoms are not as common as allergies to milk, peanuts are eggs, however a sensitivity to soy tends to increase rather than diminish with age. Soy allergy symptoms most commonly occur in infants who display dairy allergy symptoms and are placed on soy formula. Infants with milk allergies often have allergies to soy, as well. Symptoms can include asthma, dermatitis, vomiting, abdominal pain or nausea. Any, or all of these symptoms can also be ascribed to other issues that may not involve the baby’s diet at all. The best way to determine whether or not an infant is allergic to soy is through a visit to a
pediatrician.

The Difference Between Soy Allergies and Soy Intolerance

 

Soy Sauce Chicken

Soy Sauce Chicken (Photo credit: lynn.gardner)

Soy allergy symptoms are an over-reaction of the immune system that perceives the food product as a foreign substance. Soy protein intolerance is not related to the immune system and does not react by producing excess histamines. It is an inability to digest soy protein. Soy intolerance is evidenced in painful abdominal cramping or diarrhea. Symptoms can also include heart burn, nausea or vomiting. Headaches and irritability may occur in people with soy protein intolerance.

While soy allergy symptoms usually occur within a few minutes to a few hours after ingesting a soy product, soy intolerance symptoms can occur almost immediately or several days later. Sometimes soy intolerance and soy allergies overlap. A physician can give a simple allergy test to soy products that involves nothing more than pricking the skin to determine if inflamation or irritation occurs. If you have demonstrated soy allergy or soy intolerance symptoms, precautions should be taken to avoid soy products whenever possible as severe reactions may occur even if in the past, the symptoms have been mild.