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Three Main Types of Food Allergies Food allergies actually is an adverse effect which occurs if the human body believes that a certain food type is harmful. This actually is an immune reaction to food antigens. There are in fact three types of food allergies. It is actually best that you try differentiating between the types because of the fact that there are various types of immune reactions to food antibodies. The three main types of allergies are classified as Asymptomatic type 1, Acute symptomatic type 1 and also the Delayed type III. The Acute symptomatic type 1 in fact is a type of allergy which can actually be attributed to the immunoglobulin antibodies (IgE). In these kind of cases, the symptoms of the allergy will occur fast after the food has been ingested. IgE reactions usually are immediate which is why they cause the most obvious allergic reactions. The IgE antibodies mostly attach themselves to the various cells or mastocytes and likewise to basophils in tissues towards some areas of the body like the skin, gastrointestinal tract, nose, throat and the lungs. Another thing is that it results on the release of large amounts of histamine and will likewise lead to some allergic reactions such as itching, inflammation, stomach cramps, sneezing and a whole lot more. In very extreme cases, there may also be a sudden fall of blood pressure.
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The IgG4 antibodies are the ones that characterize asymptomatic food allergies type 1. Rather than having to building up IgE, the immune system actually builds up IgG4 antibodies because of different factors. This in fact is associated on the delayed food reactions and that the patient may hardly experience any of the symptoms common towards allergies. The capacity of IgG4 in releasing histamines is actually weak and there are no inflammatory reaction.
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The delayed type III is where the predominant antibody is not IgG4, but this could either be IgG, IgG3 or the IgG1, which can trigger the allergic symptoms. The symptoms will then appear in almost three days after you have consumed a particular food with the antigens and if they are not diagnosed early, the ailment can be chronic instead of acute. The symptoms likewise are different from the food allergy type 1. The type III are estimated to affect almost half of the population. If ever the body could not tolerate on some foods, it actually produces an inflammatory response and with continued consumption with the particular kind of food, the physical symptoms could appear after some days. If ever that the person is suffering on a type III allergies for some time already, it could lead to chronic diseases such as type II diabetes or an irritable bowel syndrome (IBS).