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Allergies
Causes, Symptoms and Possible Solutions
An allergy is your body’s response to something it thinks is unsafe. It is an unusual sensitivity to a normally harmless substance that provokes a strong reaction from a person's body. The body is sensitized by the immune system's response to the first exposure to the substance, and the reaction takes place only upon subsequent exposures.
The main triggers of an allergic reaction are included and discussed in this book
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