Soy Allergy Symptoms

Soy Allergy Symptoms. Food Intolerance Symptoms & Signs To Look For.

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Common allergies and symptoms is your body's hyperactive state when it come into contact with something its allergic to.

Personally, I eat soy about once every other month. My wife is allergic to soy so she needs to stay away from it. But for most people, a soy allergy is not serious.

What Is A Food Allergy?

To the best of my knowledge a soybean allergic reaction is rarely life-threatening. For those that are allergic to soy, the signs and symptoms usually develop within a few minutes to hours after eating a food containing a soy allergen. 

Soy Allergy Symptoms & Reactions

Only about 0.5%  of people have an actual allergy to soy and/or soy protein concentrate. These symptoms can manifest themselves within a few minutes (most of the time) to a few hours after eating soy or foods that contain soy.

Soy allergy symptoms can include:

  • Abdominal pain
  • Congestion
  • Diarrhea
  • Difficulty breathing
  • Hives
  • Itchy skin (eczema)
  • Mouth and/or abdominal tingling
  • Nausea 
  • Rash
  • Red or bloodshot eyes
  • Runny nose
  • Skin redness (flushing)
  • Swelling of lips, tongue, face and/or throat 
  • Vomiting
  • Wheezing
  • Anaphylactic shock 

In severe cases the victim can get Anaphylaxis shock which is very dangerous. It's a life-threatening emergency that requires immediate medical attention. 

Many times those that are suseptable to Anaphylaxis shock will carry epinephrine, sometimes called an EpiPen. This gives the person a shot of adrenaline and offers enough time to get him to the emergency room. Anaphylaxis symptoms can include:

  • Difficulty in breathing. The victim may have a swollen throat or airway making it difficult to breathe.
  • Stomach pain
  • Rapid heartbeat
  • Severe drop in blood pressure
  • Lightheaded 
  • Loss of consciousness
  • Facial flush

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What Is Soy Food Allergy vs Food Intolerance?

Intolerance is a bit more difficult to nail down because symptoms may not be immediate. It may take several hours before you have any kind of reaction which makes it harder to pinpoint the real issue. Some soy allergy or intolerance symptoms may be attributed to other foods. These symptoms can include:

  • Bloating
  • Gas
  • Stomach pain and cramps
  • Headaches
  • Rashes 

List Of Allergy Foods That Contain Soy Varying Degrees:

  • Bean curd
  • Bean sprouts
  • Edamame, soybeans
  • Hydrolyzed soy protein 
  • Kinnoko flour
  • Kyodofu
  • Miso (fermented soybean)
  • Natto (soy protein)
  • Nimame
  • Shoyu sauce 
  • Soy albumin 
  • Soy bran and fiber
  • Soy concentrate 
  • Soy flour (soybean flour)
  • Soy formula (milk)
  • Soy lecithin 
  • Soy milk 
  • Soy miso 
  • Soy nut butter 
  • Soy nuts 
  • Soy protein (isolate and concentrate)
  • Soy sauce
  • Soy sprouts
  • Soya (flour)
  • Soybean(s) (curds, granules)
  • Soybean granules 
  • Soybean paste 
  • Supro 
  • Tamari
  • Tempeh
  • Teriyaki sauce
  • Textured vegetable protein (TVP) 
  • Tofu
  • Yakidofu 
  • Yuba

Foods That May Contain Soy:

  • Artificial flavoring 
  • Asian foods (Japanese, Chinese)
  • Hydrolyzed plant protein (HPP)
  • Hydrolyzed vegetable protein (HVP) 
  • Natural flavoring 
  • Vegetable broth 

If you think your have a soy allergy or an intolerance it's best to talk to your doctor or allergist. These kinds of food allergy symptoms can be potentially life threatening due to Anaphylactic shock. It's best to get professional help.

The doctor or allergist can perform a series of tests to determine the root cause of the soy allergy and treat it accordingly.

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