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What are the Different 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 is an immune reaction towards food antigens. There are in fact three types of food allergies. You need to try differentiating between these types because they are actually all various types of immune reactions to food antibodies.

The three main types of allergies are actually classified as an Acute symptomatic type 1, Asymptomatic type 1 and also the Delayed type III.

The Acute symptomatic type 1 actually is a type of allergy which could be attributed largely on the immunoglobulin E (IgE) antibodies. In such cases, the symptoms of the allergy is going to immediately happen after the concerned food is ingested. The IgE reactions most often are immediate which is actually why they cause most of the common allergic reactions. IgE antibodies usually attach themselves to the many cells or mastocytes and also to basophils in tissues at some areas of the body like the lungs, skin, gastrointestinal tract, throat and the nose. This will then result to the release of large amounts of histamine and also lead to some allergic reactions like inflammation, itching, sneezing, stomach cramps and many more. For the cases that are extreme, there are the sudden fall of blood pressure.

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.

In the delayed type III, the predominant antibody is actually not IgG3, but could be IgG, IgG3 or an IgG1, which can actually trigger the allergic symptoms. The symptoms could then appear almost three days after the consumption of a certain food with the antigens and when they are not diagnosed early, the ailment could be chronic than acute. The symptoms also are different from the food allergy type 1.

The type III or delayed reaction in fact are estimated to affect for 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.

In case that the person is suffer from type III allergies for some periods of time, it can actually lead to chronic diseases like diabetes type II or maybe an irritable bowel syndrome (IBS).
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