The American Academy of Allergy Asthma and Immunology has estimated that more than 50 percent of all US-Americans are diagnosed positive to at least one allergen. Hundreds of millions of people worldwide suffer from allergic rhinitis, asthma and other types of this hypersensitivity disorder. Two factors seem even more troubling – first, a big part of these people are kids and secondly – the numbers have been on the rise for years now, as medical experts have yet to find the right method how to stop the human organism from attacking various seemingly innocuous substances. Many believe that lifestyle, genetics and exposure to various environmental factors play an important part in developing type I hypersensitivity. In order to find out more about allergies, their types and causes, as well as methods of treatment – read this book.