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How do you know if we have hidden food reaction?

How do you know if we have hidden food reaction?

 Many people are still confused about food allergy and food intolerance (or hidden food reaction). This article will declare the difference between both conditions.

The first condition is Food allergy. This condition is commonly notice by obvious and rapid reaction immediately or within 1 hour after eating allergic food. The range of symptoms are varies from mild symptom like itchiness or swollenness around the mouth area or severe symptoms as suffocation from respiratory failure until death.


This reaction causes by our immune system that builds IgE type antibodies to fight with the food that made allergies (The food that you eat will act as allergen in some people) After that, the body will release many chemicals including "Histamine" that provokes abnormalities in many organ systems such as respiratory tract, gastrointestinal tract, skin or cardiovascular system. Symptoms may include runny nose, tingle at tongue and lips, stomachache or even asthma. But in some cases there is a severe reaction called “anaphylaxis” which is life threatening due to swollen in respiratory tract causing respiratory distress and shock.


From the statistics, the common food allergens the cause food allergy are milk, eggs, peanuts, soy, wheat, walnuts, cashews, fish and shrimp.


Many people are confused between food allergy and hidden food reaction (Known by other names as Hidden food allergies, Delay food sensitivities, Food intolerance or Delayed type food reaction)

Symptoms of hidden food reactions can be vary from burning, indigestion, bloating, loose stools or headache etc. Those conditions are not as sudden as from Food allergies (IgE type) and caused by the different kind of immune reaction called “IgG antibodies” that build up within 2 weeks or 1 month after often eat reactive foods. The problem is this type of food reaction does not immediately present abnormal symptoms and most of the symptoms often delay which occur within 72 hours, so most affected people are hardly known that they have this condition. This condition is most related to abnormal Intestinal cell barrier (Leaky gut) and after eating reactive undigested food content, IgG antibodies that the body produces will encountered with reactive food antigens and cause inflammatory reaction, beginning in the digestive system. If frequently eat reactive foods, the large amounts of Antigen-Antibody complex will float in the bloodstream and accumulate in various tissues, which will gradually cause inflammation in those tissue and created abnormal symptoms. 


As long as we continue to eat food that our bodies reacted with, it will destroy tissues more and more. Most symptoms that patients will present are bloating, constipation, unresolved abdominal pain, diarrhea, irritable bowel syndrome, chronic headache, migraine, sneezing, asthma, stuffy nose, puffy or dark-circled eyes, skin inflammation symptoms such as acne, hives, skin rash, eczema and edema and may related to many kinds of  autoimmune diseases, celiac disease and Crohn’s disease etc.


Currently, we can detect hidden food reactions more easily and conveniently by testing IgG from blood which 132 types of reactive food can be detected, covering foods in major groups such as dairy products, eggs, cereals in both gluten and gluten-free groups, vegetables, fruits, wheat, fish, seafood, meat, herbs and spice, nuts and seeds and also including some food additives and preservatives.

 After receiving the results, our physician will inform the results to the patient, help choosing the right kind of foods to eat and reduce reactive foods that make long-term symptoms. It was found that most people with hidden food reactions had noticeably improved their symptoms after stop the food that the body resisted for some time. Because good health started from inside.




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2.​ Noh G, Ahn HS, Cho NY, et al. The clinical significance of food specific atopic dermatitis. Pediatr Allergy Immunol. 2007;18:63–70. [PubMed]

3.​ Tomicic S, Norrman G, Falth-Magnusson K, et al. High levels of IgG4 antibodies to foods during infancy are associated with tolerance to corresponding foods later in life. Pediatr Allergy Immunol.2008;20:35–41. [PubMed]

4.​ Burks AW, Tang M, Sicherer S, et al. ICON: food allergy. J Allergy Clin Immunol. 2012;129:906–20. [PubMed]

5.​ Sampson HA, Aceves S, Bock SA, et al. Food allergy: a practice parameter update – 2014. J Allergy Clin Immunol. 2014;134:1016–25. [PubMed]

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