Causes And Effect Of Allergies And Asthma

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Allergies and asthma are an everyday part of living for many people. Some of these people must avoid eating seafood, others are intolerant of ragweed, and still others might be forced to boycott the zoo because their allergies relate to animals. Animal allergies are no more or less common knowledge than seasonal pollen allergies, but they do sometimes cause a greater change in the behavior of those who suffer the effects. So why are people allergic to animals that they’ve shared the planet with for generations upon generations? And furthermore, if people have allergic responses to some animals, why do they still choose to keep certain ones as house pets? The goal of this paper is to provide an evolutionary perspective on this matter and to determine a cause that is supported by scientific data. To understand allergies, an important process is the production and effect of immunoglobulins in the bloodstream. Immunoglobulin E or IgE is an antibody. IgE is responsible for the start signal of an allergic reaction (Nesse, 161). Like other antibodies, T and B cells in the bloodstream first recognize foreign pathogens and then lead to the production of antibodies with specific membrane-bound proteins or receptors that can identify and attack this pathogen. However, the reason that IgE leads to all of the various symptoms of an allergic reaction has not yet been definitively determined, though theories have been proposed (Nesse, 161). Allergies are not an all-encompassing

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