What Are Allergies?

Allergy is hazard for immune system against a normally harmless substance (called allergen); it can not dangerous for most people. But some people face serious trouble with allergy, their immune system treats the allergy as invader and react inadequate manner and becomes the harmful for the victim. For protection of body the immune system produces antibodies called Immunoglobulin E (IGE). When mast cells (allergy cells in the body) attack the body these antibodies produce chemicals like Histamine into the bloodstream and defend against the allergy cells.

Allergy affects different part of body e.g. eyes, nose, throat, lungs, skin or gastrointestinal. If a person suffers allergy because of some particular food or any other reason he can experience it again whenever he eats or uses that cause of allergy.

Reasons of Allergy:

The basic cause of allergy is still not known. Often hereditary become the reason of allergies, which means it can be genetic dilemma. It is not necessary that all children of one parent suffer this problem may one or two inherit it. There are some kids who have allergies even if no family member is allergic. And child who is allergic to one substance is likely to be allergic to others as well. The reason an individual becomes sensitive to some substances and not to others remains unknown.

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