Allergies are abnormal reactions to normally harmless substances. The allergens can be inhaled, swallowed or come into contact with the skin. Allergens that most frequently cause problems are: pollen, mold, dust, foods, animal dander, insect bites, insect spores, viruses and bacteria. Normally the human body learns to defend itself though experience. That is by attacking a foreign substance that has invaded and harming the body by producing antibodies. The best know of these antibodies are called histamines. Some times the immune system mistakenly recognizes a foreign to be harmful when it is not. This can lead to the overproduction of histamines specially designed to destroy the specific foreign substance. If the overproduction of the histamines is large enough the View the rest of this article
Thursday, July 26, 2007
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