Soy Allergy

Clinical studies indicate that concerns about soy protein allergy may have been overstated. In fact soy protein has much less allergen potency than cow's milk. 

Soy beans are legumes, like chick peas, peanuts and pinto beans. If you do not react badly to this group - you are unlikely to have soy sensitivity.

Sign up for the Free E-book 'How To Tell If You Have Food Intolerance'


Yes! Soy Products Contain Food Toxins

There are a number of AntiNutrients found in soy and its derivatives:

  • Phytates
  • Phyto-estrogens
  • Saponins

Each of these contibutes its own combination of symptoms. You could suffer some of them - or all of them.

More about AntiNutrients


Facts About Soy Sensitivity

  • Are you concerned you might have an allergy to soy products?
  • Or perhaps you are worried about a child's symptoms, and you suspect soy?

At foodintol® we provide information from the medical journals - which is peer-reviewed and published only after rigorous examination. The clinical evidence - including this study - about soy protein allergy is as follows:


1). Soy sensitivity is dose-dependent

Any responses depend on the amount of soy protein ingested. That is -  it depends on the dose.

This is in contrast to other allergies (e.g. peanut allergy)where even a tiny amount can cause severe reactions). That means - in general - we can have a much greater amount of soy protein before experiencing allergy symptoms.


2). Soy reactions are milder than others

What we understand about the relative severity of reactions of soy compared to say, cow's milk:

    • Cow's milk protein has around 186 times more allergenicity than soy protein - reference below


 3). Symptoms of Soy Allergy

These are very similar to other large 'modern food' protein reactions - like those to gluten and casein. Therefore you may be confused as which one is causing yours. Symptoms include:

      • Headache
      • Grogginess, impaired awareness
      • Stiff neck or other muscles
      • Back pain, body soreness
      • Diarrhea
      • Nausea
      • Tiredness

The Journal Method will correctly identify whether soy is your particular problem - or some other food intolerance.


 4). Symptoms overlap with other intolerances

Depending on which symptoms you have - you may actually be confusing soy allergy with other food sensitivities like Gluten intolerance, or fructose sensitivity. Have a look in the Index of Symptoms before assuming soy sensitivity.


5). How to detect Soy Allergy

The best way to pinpoint soy allergy is to leave itout of your diet and monitor the results. We recommend the Journal Method. It's great to get actual proof - because then you know for life - and can avoid all those awful foggy days of headache and illness. Soy is now contained in thousands of processed fods and can be difficult to avoid without assistance.


Food Intolerance is Common

These are the four main types of food intolerance:

Food Intolerance


Dairy Intolerance (inc. Lactose intolerance)

~ 75%

3 in 4 people

Yeast Sensitivity (Thrush, Candida)

~ 33%

1 in 3 people

Gluten Sensitivity (inc. Celiac & Wheat Intolerance)

~ 15%

1 in 7 people

Fructose Sensitivity or Intolerance

~ 35%

1 in 3 people

Food Allergy

< 1%

1 in 100 people


To find out more - sign up for the Free E-book 'How to Tell If You Have Food Intolerance'


Which food intolerance? How do I find the cause of my symptoms?

Nobody can tell from symptoms alone - it could be any of the main four intolerances because symptoms overlap. But with a purpose-designed Journal you make a few notes each day as you switch a few foods. 


Make Yourself Well on the Right Foods

A Whole New Lease on Life

Find out the right foods for you - and take control of your life. Live well, live long. As a once-only purchase - our Programs deliver many benefits:

  • Stop suffering: symptoms subside within days
  • Never have those symptoms again - a permanent solution
  • Achieve weight changes - naturally and without effort
  • Notice better skin, hair and nails: look good and feel great
  • Protect your health for the long term - peace of mind
  • Share your findings with the family












WholeNew 1



  • Cordle, C. Soy Protein Allergy; Incidence and Relative Severity. J. Nutr. May 1, 2004 vol. 134 no. 51213S - 1219S. Supplement: Fifth International Symposium on the Role of Soy in Preventing and Treating Chronic Disease
  • Ballmer-Weber et al. Soy allergy in perspective. Curr Opin Allergy Clin Immunol. 2008 Jun;8(3):270-5.
  • De Swert et al. Secondary soy allergy in children with birch pollen allergy may cause both chronic and acute symptoms. Pediatr Allergy Immunol. 2011 Oct 21.