Food allergies are adverse effect which happens when the human body believes that a certain food is harmful. This is an immune reaction towards food antigens. There are actually 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 primary types of allergies could also be classified as Acute symptomatic type 1, Asymptomatic type 1 and 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 these kind of cases, the symptoms of the allergy will occur fast after the food has been ingested. IgE reactions most often are immediate, which is the reason why they cause an obvious allergic reactions. The IgE antibodies mostly attach themselves towards mastocytes or different cells and to basophils in tissues to some areas of the body like the gastrointestinal tract, throat, nose, skin and the persons lungs. 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. In very extreme cases, there may also be a sudden fall of blood pressure.
An IgG4 antibody characterize asymptomatic food allergies type 1. Aside from the process of building up IgE, the immune system is going to build up IgG4 antibodies because of different factors. This is in fact associated on the delayed food reactions and that the patient could hardly experience any of such symptoms which are 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 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).
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