Food allergies actually is an adverse effect which occurs if the human body believes that a certain food type is harmful. This is considered as an immune reaction towards food antigens. There are actually 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 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. 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 IgG3 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 would be in releasing histamines is very weak and that there are no inflammatory reactions.
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 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 or delayed reaction in fact are estimated to affect for half of the population. If the body is also not able to tolerate some foods, it produces an inflammatory response and also with continued consumption with a certain food and that the physical symptoms could appear after several 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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